{"id":5831,"date":"2026-08-27T16:43:48","date_gmt":"2026-08-27T16:43:48","guid":{"rendered":"https:\/\/srtech.it\/?page_id=5831"},"modified":"2026-08-27T16:43:50","modified_gmt":"2026-08-27T16:43:50","slug":"iso-2768-1-general-tolerances","status":"publish","type":"page","link":"https:\/\/srtech.it\/en\/iso-2768-1-general-tolerances\/","title":{"rendered":"ISO 2768-1 General Tolerances"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; theme_builder_area=&#8221;post_content&#8221; _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221;][et_pb_row _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; type=&#8221;4_4&#8243; theme_builder_area=&#8221;post_content&#8221;][et_pb_code _builder_version=&#8221;4.18.0&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<!--<!-- [et_pb_line_break_holder] -->SR TECH &#8211; ISO 2768-1 VERSION B &#8211; ENGLISH<!-- [et_pb_line_break_holder] -->Complete calculator:<!-- [et_pb_line_break_holder] -->&#8211; Linear dimensions<!-- [et_pb_line_break_holder] -->&#8211; Radii \/ chamfers<!-- [et_pb_line_break_holder] -->&#8211; Angular dimensions<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->Ready for a Divi CODE module.<!-- [et_pb_line_break_holder] -->No external libraries.<!-- [et_pb_line_break_holder] -->&#8211;><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] --><\/p>\n<style><!-- [et_pb_line_break_holder] -->    :root{<!-- [et_pb_line_break_holder] -->      --sr-red:#c91524;<!-- [et_pb_line_break_holder] -->      --sr-red-dark:#a80f1b;<!-- [et_pb_line_break_holder] -->      --sr-black:#151515;<!-- [et_pb_line_break_holder] -->      --sr-text:#2b2b2b;<!-- [et_pb_line_break_holder] -->      --sr-muted:#6c6c6c;<!-- [et_pb_line_break_holder] -->      --sr-line:#dedede;<!-- [et_pb_line_break_holder] -->      --sr-bg:#f5f5f5;<!-- [et_pb_line_break_holder] -->      --sr-soft:#fff6f7;<!-- [et_pb_line_break_holder] -->      --sr-white:#ffffff;<!-- [et_pb_line_break_holder] -->      --sr-radius:14px;<!-- [et_pb_line_break_holder] -->      --sr-shadow:0 10px 28px rgba(0,0,0,.08);<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-iso2768,<!-- [et_pb_line_break_holder] -->    .sr-iso2768 *{<!-- [et_pb_line_break_holder] -->      box-sizing:border-box;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-iso2768{<!-- [et_pb_line_break_holder] -->      font-family:Arial, Helvetica, sans-serif;<!-- [et_pb_line_break_holder] -->      color:var(--sr-text);<!-- [et_pb_line_break_holder] -->      line-height:1.6;<!-- [et_pb_line_break_holder] -->      max-width:1180px;<!-- [et_pb_line_break_holder] -->      margin:0 auto;<!-- [et_pb_line_break_holder] -->      padding:22px 18px 50px;<!-- [et_pb_line_break_holder] -->      background:var(--sr-white);<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-iso2768 h1,<!-- [et_pb_line_break_holder] -->    .sr-iso2768 h2,<!-- [et_pb_line_break_holder] -->    .sr-iso2768 h3{<!-- [et_pb_line_break_holder] -->      color:var(--sr-black);<!-- [et_pb_line_break_holder] -->      line-height:1.18;<!-- [et_pb_line_break_holder] -->      margin-top:0;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-iso2768 h1{<!-- [et_pb_line_break_holder] -->      font-size:clamp(34px,5vw,56px);<!-- [et_pb_line_break_holder] -->      margin-bottom:16px;<!-- [et_pb_line_break_holder] -->      letter-spacing:-.03em;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- 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[et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-result-card{<!-- [et_pb_line_break_holder] -->      background:#fff;<!-- [et_pb_line_break_holder] -->      border:1px solid #e2d7d8;<!-- [et_pb_line_break_holder] -->      border-radius:9px;<!-- [et_pb_line_break_holder] -->      padding:15px;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-result-card small{<!-- [et_pb_line_break_holder] -->      display:block;<!-- [et_pb_line_break_holder] -->      color:#777;<!-- [et_pb_line_break_holder] -->      margin-bottom:4px;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-result-card strong{<!-- [et_pb_line_break_holder] -->      font-size:22px;<!-- [et_pb_line_break_holder] -->      color:var(--sr-black);<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-result-note{<!-- [et_pb_line_break_holder] -->      margin-top:13px;<!-- [et_pb_line_break_holder] -->      font-size:14px;<!-- [et_pb_line_break_holder] -->      color:#555;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-note,<!-- [et_pb_line_break_holder] -->    .sr-warning{<!-- [et_pb_line_break_holder] -->      border-radius:12px;<!-- [et_pb_line_break_holder] -->      padding:18px 20px;<!-- [et_pb_line_break_holder] -->      margin:20px 0;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-note{<!-- [et_pb_line_break_holder] -->      background:#f1f1f1;<!-- [et_pb_line_break_holder] -->      border-left:4px solid #555;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-warning{<!-- [et_pb_line_break_holder] -->      background:var(--sr-soft);<!-- [et_pb_line_break_holder] -->      border-left:4px solid var(--sr-red);<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-warning strong,<!-- [et_pb_line_break_holder] -->    .sr-note strong{<!-- [et_pb_line_break_holder] -->      color:var(--sr-black);<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-class-grid{<!-- [et_pb_line_break_holder] -->      display:grid;<!-- [et_pb_line_break_holder] -->      grid-template-columns:repeat(4,1fr);<!-- [et_pb_line_break_holder] -->      gap:12px;<!-- [et_pb_line_break_holder] -->      margin-top:22px;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-class-card{<!-- [et_pb_line_break_holder] -->      border:1px solid var(--sr-line);<!-- [et_pb_line_break_holder] -->      border-top:5px solid var(--sr-red);<!-- [et_pb_line_break_holder] -->      border-radius:12px;<!-- [et_pb_line_break_holder] -->      padding:20px;<!-- [et_pb_line_break_holder] -->      background:#fff;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-class-letter{<!-- [et_pb_line_break_holder] -->      font-size:34px;<!-- [et_pb_line_break_holder] -->      line-height:1;<!-- [et_pb_line_break_holder] -->      font-weight:900;<!-- [et_pb_line_break_holder] -->      color:var(--sr-red);<!-- [et_pb_line_break_holder] -->      margin-bottom:8px;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-table-wrap{<!-- [et_pb_line_break_holder] -->      width:100%;<!-- [et_pb_line_break_holder] -->      overflow-x:auto;<!-- [et_pb_line_break_holder] -->      margin:18px 0 8px;<!-- [et_pb_line_break_holder] -->      border:1px solid var(--sr-line);<!-- [et_pb_line_break_holder] -->      border-radius:12px;<!-- [et_pb_line_break_holder] -->      -webkit-overflow-scrolling:touch;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-table{<!-- [et_pb_line_break_holder] -->      width:100%;<!-- [et_pb_line_break_holder] -->      border-collapse:collapse;<!-- [et_pb_line_break_holder] -->      min-width:700px;<!-- [et_pb_line_break_holder] -->      background:#fff;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-table th,<!-- [et_pb_line_break_holder] -->    .sr-table td{<!-- [et_pb_line_break_holder] -->      padding:13px 14px;<!-- [et_pb_line_break_holder] -->      border-bottom:1px solid #e6e6e6;<!-- [et_pb_line_break_holder] -->      border-right:1px solid #ededed;<!-- [et_pb_line_break_holder] -->      text-align:center;<!-- [et_pb_line_break_holder] -->      vertical-align:middle;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-table th:last-child,<!-- [et_pb_line_break_holder] -->    .sr-table td:last-child{<!-- [et_pb_line_break_holder] -->      border-right:0;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-table tr:last-child td{<!-- [et_pb_line_break_holder] -->      border-bottom:0;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-table thead th{<!-- [et_pb_line_break_holder] -->      background:var(--sr-black);<!-- [et_pb_line_break_holder] -->      color:#fff;<!-- [et_pb_line_break_holder] -->      font-size:14px;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-table thead th:first-child{<!-- [et_pb_line_break_holder] -->      text-align:left;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-table tbody td:first-child{<!-- [et_pb_line_break_holder] -->      text-align:left;<!-- [et_pb_line_break_holder] -->      font-weight:700;<!-- [et_pb_line_break_holder] -->      background:#fafafa;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-table .sr-highlight{<!-- [et_pb_line_break_holder] -->      background:#fff1f2;<!-- [et_pb_line_break_holder] -->      font-weight:800;<!-- [et_pb_line_break_holder] -->      color:#8f111b;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-caption{<!-- [et_pb_line_break_holder] -->      margin:8px 0 0;<!-- [et_pb_line_break_holder] -->      font-size:13px;<!-- [et_pb_line_break_holder] -->      color:#777;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-example{<!-- [et_pb_line_break_holder] -->      display:grid;<!-- [et_pb_line_break_holder] -->      grid-template-columns:120px 1fr;<!-- [et_pb_line_break_holder] -->      gap:18px;<!-- [et_pb_line_break_holder] -->      align-items:center;<!-- [et_pb_line_break_holder] -->      background:#f7f7f7;<!-- [et_pb_line_break_holder] -->      border-radius:12px;<!-- [et_pb_line_break_holder] -->      padding:20px;<!-- [et_pb_line_break_holder] -->      margin:18px 0;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-example-badge{<!-- [et_pb_line_break_holder] -->      display:flex;<!-- [et_pb_line_break_holder] -->      align-items:center;<!-- [et_pb_line_break_holder] -->      justify-content:center;<!-- [et_pb_line_break_holder] -->      min-height:90px;<!-- [et_pb_line_break_holder] -->      border-radius:10px;<!-- [et_pb_line_break_holder] -->      background:var(--sr-black);<!-- [et_pb_line_break_holder] -->      color:#fff;<!-- [et_pb_line_break_holder] -->      font-size:25px;<!-- [et_pb_line_break_holder] -->      font-weight:900;<!-- [et_pb_line_break_holder] -->      text-align:center;<!-- [et_pb_line_break_holder] -->      padding:10px;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-checklist{<!-- [et_pb_line_break_holder] -->      list-style:none;<!-- [et_pb_line_break_holder] -->      padding:0;<!-- [et_pb_line_break_holder] -->      margin:18px 0 0;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-checklist li{<!-- [et_pb_line_break_holder] -->      position:relative;<!-- [et_pb_line_break_holder] -->      padding:9px 0 9px 30px;<!-- [et_pb_line_break_holder] -->      border-bottom:1px solid #eee;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-checklist li:before{<!-- [et_pb_line_break_holder] -->      content:\"\u2713\";<!-- [et_pb_line_break_holder] -->      position:absolute;<!-- [et_pb_line_break_holder] -->      left:0;<!-- [et_pb_line_break_holder] -->      top:8px;<!-- [et_pb_line_break_holder] -->      color:var(--sr-red);<!-- [et_pb_line_break_holder] -->      font-weight:900;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-faq details{<!-- [et_pb_line_break_holder] -->      border:1px solid var(--sr-line);<!-- [et_pb_line_break_holder] -->      border-radius:10px;<!-- [et_pb_line_break_holder] -->      margin:10px 0;<!-- [et_pb_line_break_holder] -->      background:#fff;<!-- [et_pb_line_break_holder] -->      overflow:hidden;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-faq summary{<!-- [et_pb_line_break_holder] -->      cursor:pointer;<!-- [et_pb_line_break_holder] -->      list-style:none;<!-- [et_pb_line_break_holder] -->      padding:17px 18px;<!-- [et_pb_line_break_holder] -->      font-weight:800;<!-- [et_pb_line_break_holder] -->      color:var(--sr-black);<!-- [et_pb_line_break_holder] -->      position:relative;<!-- [et_pb_line_break_holder] -->      padding-right:48px;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-faq summary::-webkit-details-marker{<!-- [et_pb_line_break_holder] -->      display:none;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-faq summary:after{<!-- [et_pb_line_break_holder] -->      content:\"+\";<!-- [et_pb_line_break_holder] -->      position:absolute;<!-- [et_pb_line_break_holder] -->      right:18px;<!-- [et_pb_line_break_holder] -->      top:50%;<!-- [et_pb_line_break_holder] -->      transform:translateY(-50%);<!-- [et_pb_line_break_holder] -->      color:var(--sr-red);<!-- [et_pb_line_break_holder] -->      font-size:24px;<!-- [et_pb_line_break_holder] -->      font-weight:500;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-faq details[open] summary:after{<!-- [et_pb_line_break_holder] -->      content:\"\u2212\";<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-faq-answer{<!-- [et_pb_line_break_holder] -->      padding:0 18px 17px;<!-- [et_pb_line_break_holder] -->      color:#4b4b4b;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-sources{<!-- [et_pb_line_break_holder] -->      font-size:14px;<!-- [et_pb_line_break_holder] -->      color:#555;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-sources ul{<!-- [et_pb_line_break_holder] -->      margin:10px 0 0;<!-- [et_pb_line_break_holder] -->      padding-left:21px;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    .sr-mini{<!-- [et_pb_line_break_holder] -->      font-size:13px;<!-- [et_pb_line_break_holder] -->      color:#777;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    @media (max-width:820px){<!-- [et_pb_line_break_holder] -->      .sr-form-grid,<!-- [et_pb_line_break_holder] -->      .sr-class-grid{<!-- [et_pb_line_break_holder] -->        grid-template-columns:1fr 1fr;<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->      .sr-result-grid{<!-- [et_pb_line_break_holder] -->        grid-template-columns:1fr;<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    @media (max-width:560px){<!-- [et_pb_line_break_holder] -->      .sr-iso2768{<!-- [et_pb_line_break_holder] -->        padding-left:12px;<!-- [et_pb_line_break_holder] -->        padding-right:12px;<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->      .sr-hero{<!-- [et_pb_line_break_holder] -->        padding:36px 22px;<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->      .sr-hero p{<!-- [et_pb_line_break_holder] -->        font-size:16px;<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->      .sr-calc-head,<!-- [et_pb_line_break_holder] -->      .sr-calc-body{<!-- [et_pb_line_break_holder] -->        padding:21px 18px;<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->      .sr-form-grid,<!-- [et_pb_line_break_holder] -->      .sr-class-grid{<!-- [et_pb_line_break_holder] -->        grid-template-columns:1fr;<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->      .sr-classes{<!-- [et_pb_line_break_holder] -->        grid-template-columns:1fr 1fr;<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->      .sr-example{<!-- [et_pb_line_break_holder] -->        grid-template-columns:1fr;<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->      .sr-example-badge{<!-- [et_pb_line_break_holder] -->        min-height:64px;<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] -->  <!-- [et_pb_line_break_holder] -->    #srTypeGroup{<!-- [et_pb_line_break_holder] -->      grid-template-columns:repeat(3,1fr);<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    #srTypeGroup .sr-class-btn{<!-- [et_pb_line_break_holder] -->      padding:14px 8px;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    @media (max-width:700px){<!-- [et_pb_line_break_holder] -->      #srTypeGroup{<!-- [et_pb_line_break_holder] -->        grid-template-columns:1fr;<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  <\/style>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] --><main class=\"sr-iso2768\" id=\"iso-2768\"><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  <\/p>\n<section class=\"sr-hero\"><!-- [et_pb_line_break_holder] -->    <span class=\"sr-kicker\">Dimensional tolerances<\/span><!-- [et_pb_line_break_holder] -->    <\/p>\n<h1>ISO 2768-1 General Tolerances<\/h1>\n<p><!-- [et_pb_line_break_holder] -->    <pee>Calculator and general tolerance tables for linear dimensions, radii, chamfers and angular dimensions according to ISO 2768-1. Enter a nominal dimension and select class f, m, c or v to immediately obtain the dimensional limits.<\/pee><!-- [et_pb_line_break_holder] -->  <\/section>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  <pee class=\"sr-lead\"><!-- [et_pb_line_break_holder] -->    The <strong>ISO 2768-1<\/strong> standard defines general tolerances for dimensions on technical drawings that do not have an individual tolerance indication. The available classes are <strong>f (fine)<\/strong>, <strong>m (medium)<\/strong>, <strong>c (coarse)<\/strong> and <strong>v (very coarse)<\/strong>.<!-- [et_pb_line_break_holder] -->  <\/pee><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  <\/p>\n<nav class=\"sr-toc\" aria-label=\"Page contents\"><!-- [et_pb_line_break_holder] -->    <a href=\"#calcolatore\">Calculator<\/a><!-- [et_pb_line_break_holder] -->    <a href=\"#cos-e\">What is ISO 2768-1?<\/a><!-- [et_pb_line_break_holder] -->    <a href=\"#classi\">Classes f m c v<\/a><!-- [et_pb_line_break_holder] -->    <a href=\"#tabella-lineare\">Linear dimensions<\/a><!-- [et_pb_line_break_holder] -->    <a href=\"#raggi-smussi\">Radii and chamfers<\/a><!-- [et_pb_line_break_holder] -->    <a href=\"#angoli\">Angles<\/a><!-- [et_pb_line_break_holder] -->    <a href=\"#disegno\">Drawing indication<\/a><!-- [et_pb_line_break_holder] -->    <a href=\"#faq\">FAQ<\/a><!-- [et_pb_line_break_holder] -->  <\/nav>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  <\/p>\n<section class=\"sr-section\" id=\"calcolatore\"><!-- [et_pb_line_break_holder] -->    <\/p>\n<div class=\"sr-calculator\"><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-calc-head\"><!-- [et_pb_line_break_holder] -->        <\/p>\n<h2>ISO 2768-1 Tolerance Calculator<\/h2>\n<p><!-- [et_pb_line_break_holder] -->        <pee>Calculate tolerances for <strong>linear dimensions<\/strong>, <strong>radii and chamfers<\/strong>, or <strong>angular dimensions<\/strong>.<\/pee><!-- [et_pb_line_break_holder] -->      <\/div>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-calc-body\"><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        <\/p>\n<div style=\"margin-bottom:24px;\"><!-- [et_pb_line_break_holder] -->          <span class=\"sr-label\">Dimension type<\/span><!-- [et_pb_line_break_holder] -->          <\/p>\n<div class=\"sr-classes\" id=\"srTypeGroup\"><!-- [et_pb_line_break_holder] -->            <button type=\"button\" class=\"sr-class-btn is-active\" data-type=\"linear\">Linear dimension<span>0.5\u20134000 mm<\/span><\/button><!-- [et_pb_line_break_holder] -->            <button type=\"button\" class=\"sr-class-btn\" data-type=\"radius\">Radius \/ Chamfer<span>from 0.5 mm<\/span><\/button><!-- [et_pb_line_break_holder] -->            <button type=\"button\" class=\"sr-class-btn\" data-type=\"angle\">Angular dimension<span>use the shorter side<\/span><\/button><!-- [et_pb_line_break_holder] -->          <\/div>\n<p><!-- [et_pb_line_break_holder] -->        <\/div>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        <\/p>\n<div class=\"sr-form-grid\"><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->          <\/p>\n<div id=\"srLinearFields\"><!-- [et_pb_line_break_holder] -->            <label class=\"sr-label\" for=\"srNominale\">Nominal dimension<\/label><!-- [et_pb_line_break_holder] -->            <\/p>\n<div class=\"sr-input-wrap\"><!-- [et_pb_line_break_holder] -->              <input id=\"srNominale\" type=\"text\" inputmode=\"decimal\" placeholder=\"e.g. 100\" aria-label=\"Nominal dimension in millimetres\"><!-- [et_pb_line_break_holder] -->              <span class=\"sr-input-unit\">mm<\/span><!-- [et_pb_line_break_holder] -->            <\/div>\n<p><!-- [et_pb_line_break_holder] -->            <\/p>\n<div class=\"sr-mini\" style=\"margin-top:7px\">You can use either a comma or a decimal point.<\/div>\n<p><!-- [et_pb_line_break_holder] -->          <\/div>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->          <\/p>\n<div id=\"srRadiusFields\" style=\"display:none;\"><!-- [et_pb_line_break_holder] -->            <label class=\"sr-label\" for=\"srRaggio\">Radius or chamfer height<\/label><!-- [et_pb_line_break_holder] -->            <\/p>\n<div class=\"sr-input-wrap\"><!-- [et_pb_line_break_holder] -->              <input id=\"srRaggio\" type=\"text\" inputmode=\"decimal\" placeholder=\"e.g. 4\" aria-label=\"Radius or chamfer height in millimetres\"><!-- [et_pb_line_break_holder] -->              <span class=\"sr-input-unit\">mm<\/span><!-- [et_pb_line_break_holder] -->            <\/div>\n<p><!-- [et_pb_line_break_holder] -->            <\/p>\n<div class=\"sr-mini\" style=\"margin-top:7px\">Valid for external radii and chamfer heights.<\/div>\n<p><!-- [et_pb_line_break_holder] -->          <\/div>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->          <\/p>\n<div id=\"srAngleFields\" style=\"display:none;\"><!-- [et_pb_line_break_holder] -->            <label class=\"sr-label\" for=\"srAngolo\">Nominal angle<\/label><!-- [et_pb_line_break_holder] -->            <\/p>\n<div class=\"sr-input-wrap\"><!-- [et_pb_line_break_holder] -->              <input id=\"srAngolo\" type=\"text\" inputmode=\"decimal\" placeholder=\"e.g. 90\" aria-label=\"Nominal angle in degrees\"><!-- [et_pb_line_break_holder] -->              <span class=\"sr-input-unit\">\u00b0<\/span><!-- [et_pb_line_break_holder] -->            <\/div>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->            <label class=\"sr-label\" for=\"srLato\" style=\"margin-top:14px;\">Length of the shorter side<\/label><!-- [et_pb_line_break_holder] -->            <\/p>\n<div class=\"sr-input-wrap\"><!-- [et_pb_line_break_holder] -->              <input id=\"srLato\" type=\"text\" inputmode=\"decimal\" placeholder=\"e.g. 80\" aria-label=\"Length of the shorter side in millimetres\"><!-- [et_pb_line_break_holder] -->              <span class=\"sr-input-unit\">mm<\/span><!-- [et_pb_line_break_holder] -->            <\/div>\n<p><!-- [et_pb_line_break_holder] -->          <\/div>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->          <\/p>\n<div><!-- [et_pb_line_break_holder] -->            <span class=\"sr-label\">Tolerance class<\/span><!-- [et_pb_line_break_holder] -->            <\/p>\n<div class=\"sr-classes\" role=\"group\" aria-label=\"Tolerance class\"><!-- [et_pb_line_break_holder] -->              <button type=\"button\" class=\"sr-class-btn sr-tol-btn\" data-class=\"f\">f<span>fine<\/span><\/button><!-- [et_pb_line_break_holder] -->              <button type=\"button\" class=\"sr-class-btn sr-tol-btn is-active\" data-class=\"m\">m<span>medium<\/span><\/button><!-- [et_pb_line_break_holder] -->              <button type=\"button\" class=\"sr-class-btn sr-tol-btn\" data-class=\"c\">c<span>coarse<\/span><\/button><!-- [et_pb_line_break_holder] -->              <button type=\"button\" class=\"sr-class-btn sr-tol-btn\" data-class=\"v\">v<span>very coarse<\/span><\/button><!-- [et_pb_line_break_holder] -->            <\/div>\n<p><!-- [et_pb_line_break_holder] -->          <\/div>\n<p><!-- [et_pb_line_break_holder] -->        <\/div>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        <\/p>\n<div class=\"sr-calc-action\"><!-- [et_pb_line_break_holder] -->          <button type=\"button\" class=\"sr-btn sr-btn-primary\" id=\"srCalcola\">Calculate tolerance<\/button><!-- [et_pb_line_break_holder] -->          <button type=\"button\" class=\"sr-btn sr-btn-secondary\" id=\"srReset\">Reset<\/button><!-- [et_pb_line_break_holder] -->        <\/div>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->        <\/p>\n<div class=\"sr-result\" id=\"srResult\" aria-live=\"polite\"><\/div>\n<p><!-- [et_pb_line_break_holder] -->      <\/div>\n<p><!-- [et_pb_line_break_holder] -->    <\/div>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <pee class=\"sr-caption\"><!-- [et_pb_line_break_holder] -->      This calculator is provided for information purposes. For design, inspection or product acceptance, always verify the drawing, the applicable edition of the referenced standard and any contractual requirements.<!-- [et_pb_line_break_holder] -->    <\/pee><!-- [et_pb_line_break_holder] -->  <\/section>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  <\/p>\n<section class=\"sr-section\" id=\"cos-e\"><!-- [et_pb_line_break_holder] -->    <\/p>\n<h2>What is ISO 2768-1?<\/h2>\n<p><!-- [et_pb_line_break_holder] -->    <pee><!-- [et_pb_line_break_holder] -->      ISO 2768-1 defines <strong>general tolerances for linear and angular dimensions without an individual tolerance indication<\/strong>. Its purpose is to simplify technical drawings: instead of specifying a tolerance next to every non-critical dimension, a general tolerance class can be indicated in the title block.<!-- [et_pb_line_break_holder] -->    <\/pee><!-- [et_pb_line_break_holder] -->    <pee><!-- [et_pb_line_break_holder] -->      The standard is mainly intended for dimensions produced by <strong>material removal<\/strong> and for parts formed from <strong>sheet metal<\/strong>. It covers linear dimensions, diameters, distances, external radii, chamfer heights and angular dimensions that fall within its scope.<!-- [et_pb_line_break_holder] -->    <\/pee><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<div class=\"sr-warning\"><!-- [et_pb_line_break_holder] -->      <strong>Important for cast dimensions.<\/strong> ISO 2768-1 is not intended as a general standard for the \u201cas-cast\u201d dimensional tolerances of castings or investment castings. Specific standards in the ISO 8062 series apply to castings. A dimension subsequently obtained by machining may instead be controlled according to ISO 2768-1 when appropriately specified on the drawing.<!-- [et_pb_line_break_holder] -->    <\/div>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<h3>When it does not apply<\/h3>\n<p><!-- [et_pb_line_break_holder] -->    <pee>ISO 2768-1 does not replace a specific tolerance stated directly on a dimension. Among other cases, it does not apply to auxiliary dimensions shown in parentheses or to theoretically exact dimensions shown in a rectangular frame.<\/pee><!-- [et_pb_line_break_holder] -->  <\/section>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  <\/p>\n<section class=\"sr-section\" id=\"classi\"><!-- [et_pb_line_break_holder] -->    <\/p>\n<h2>ISO 2768-1 Tolerance Classes: f, m, c, v<\/h2>\n<p><!-- [et_pb_line_break_holder] -->    <pee>The selected class determines the allowable deviation range. The class should be chosen according to the manufacturing process and the functional requirements of the component, avoiding unnecessarily tight tolerances.<\/pee><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<div class=\"sr-class-grid\"><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-class-card\"><!-- [et_pb_line_break_holder] -->        <\/p>\n<div class=\"sr-class-letter\">f<\/div>\n<p><!-- [et_pb_line_break_holder] -->        <\/p>\n<h3>Fine<\/h3>\n<p><!-- [et_pb_line_break_holder] -->        <pee>The tightest general tolerance of the four classes.<\/pee><!-- [et_pb_line_break_holder] -->      <\/div>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-class-card\"><!-- [et_pb_line_break_holder] -->        <\/p>\n<div class=\"sr-class-letter\">m<\/div>\n<p><!-- [et_pb_line_break_holder] -->        <\/p>\n<h3>Medium<\/h3>\n<p><!-- [et_pb_line_break_holder] -->        <pee>Intermediate class frequently used for general machining.<\/pee><!-- [et_pb_line_break_holder] -->      <\/div>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-class-card\"><!-- [et_pb_line_break_holder] -->        <\/p>\n<div class=\"sr-class-letter\">c<\/div>\n<p><!-- [et_pb_line_break_holder] -->        <\/p>\n<h3>Coarse<\/h3>\n<p><!-- [et_pb_line_break_holder] -->        <pee>Allows larger deviations than classes f and m.<\/pee><!-- [et_pb_line_break_holder] -->      <\/div>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-class-card\"><!-- [et_pb_line_break_holder] -->        <\/p>\n<div class=\"sr-class-letter\">v<\/div>\n<p><!-- [et_pb_line_break_holder] -->        <\/p>\n<h3>Very coarse<\/h3>\n<p><!-- [et_pb_line_break_holder] -->        <pee>Class with the widest dimensional deviations provided by the table.<\/pee><!-- [et_pb_line_break_holder] -->      <\/div>\n<p><!-- [et_pb_line_break_holder] -->    <\/div>\n<p><!-- [et_pb_line_break_holder] -->  <\/section>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  <\/p>\n<section class=\"sr-section\" id=\"tabella-lineare\"><!-- [et_pb_line_break_holder] -->    <\/p>\n<h2>ISO 2768-1 Table for Linear Dimensions<\/h2>\n<p><!-- [et_pb_line_break_holder] -->    <pee>The deviations shown are symmetrical about the nominal dimension and are expressed in millimetres.<\/pee><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<div class=\"sr-table-wrap\"><!-- [et_pb_line_break_holder] -->      <\/p>\n<table class=\"sr-table\"><!-- [et_pb_line_break_holder] -->        <\/p>\n<thead><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>Nominal dimension range (mm)<\/th>\n<p><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>f \u2014 fine<\/th>\n<p><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>m \u2014 medium<\/th>\n<p><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>c \u2014 coarse<\/th>\n<p><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>v \u2014 very coarse<\/th>\n<p><!-- [et_pb_line_break_holder] -->          <\/tr>\n<p><!-- [et_pb_line_break_holder] -->        <\/thead>\n<p><!-- [et_pb_line_break_holder] -->        <\/p>\n<tbody><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>from 0.5 to 3<\/td>\n<td>\u00b10.05<\/td>\n<td class=\"sr-highlight\">\u00b10.10<\/td>\n<td>\u00b10.20<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>over 3 up to 6<\/td>\n<td>\u00b10.05<\/td>\n<td class=\"sr-highlight\">\u00b10.10<\/td>\n<td>\u00b10.30<\/td>\n<td>\u00b10.50<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>over 6 up to 30<\/td>\n<td>\u00b10.10<\/td>\n<td class=\"sr-highlight\">\u00b10.20<\/td>\n<td>\u00b10.50<\/td>\n<td>\u00b11.00<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>over 30 up to 120<\/td>\n<td>\u00b10.15<\/td>\n<td class=\"sr-highlight\">\u00b10.30<\/td>\n<td>\u00b10.80<\/td>\n<td>\u00b11.50<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>over 120 up to 400<\/td>\n<td>\u00b10.20<\/td>\n<td class=\"sr-highlight\">\u00b10.50<\/td>\n<td>\u00b11.20<\/td>\n<td>\u00b12.50<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>over 400 up to 1000<\/td>\n<td>\u00b10.30<\/td>\n<td class=\"sr-highlight\">\u00b10.80<\/td>\n<td>\u00b12.00<\/td>\n<td>\u00b14.00<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>over 1000 up to 2000<\/td>\n<td>\u00b10.50<\/td>\n<td class=\"sr-highlight\">\u00b11.20<\/td>\n<td>\u00b13.00<\/td>\n<td>\u00b16.00<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>over 2000 up to 4000<\/td>\n<td>\u2014<\/td>\n<td class=\"sr-highlight\">\u00b12.00<\/td>\n<td>\u00b14.00<\/td>\n<td>\u00b18.00<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->        <\/tbody>\n<p><!-- [et_pb_line_break_holder] -->      <\/table>\n<p><!-- [et_pb_line_break_holder] -->    <\/div>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <pee class=\"sr-caption\">For nominal dimensions below 0.5 mm, the tolerance must be specified directly on the drawing. The \u201c\u2014\u201d symbol indicates that no value is specified for that class and range.<\/pee><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<div class=\"sr-example\"><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-example-badge\">100 mm<!\u2013- [et_pb_br_holder] -\u2013>class m<\/div>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<div><!-- [et_pb_line_break_holder] -->        <\/p>\n<h3>Example: 100 mm dimension with ISO 2768-m<\/h3>\n<p><!-- [et_pb_line_break_holder] -->        <pee>100 mm falls within the range <strong>over 30 up to 120 mm<\/strong>. For class <strong>m<\/strong>, the deviation is <strong>\u00b10.30 mm<\/strong>.<\/pee><!-- [et_pb_line_break_holder] -->        <pee><strong>Lower limit: 99.70 mm<\/strong><!\u2013- [et_pb_br_holder] -\u2013><strong>Upper limit: 100.30 mm<\/strong><\/pee><!-- [et_pb_line_break_holder] -->      <\/div>\n<p><!-- [et_pb_line_break_holder] -->    <\/div>\n<p><!-- [et_pb_line_break_holder] -->  <\/section>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  <\/p>\n<section class=\"sr-section\" id=\"raggi-smussi\"><!-- [et_pb_line_break_holder] -->    <\/p>\n<h2>Tolerances for External Radii and Chamfer Heights<\/h2>\n<p><!-- [et_pb_line_break_holder] -->    <pee>ISO 2768-1 provides a separate table for external radii and chamfer heights of broken edges.<\/pee><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<div class=\"sr-table-wrap\"><!-- [et_pb_line_break_holder] -->      <\/p>\n<table class=\"sr-table\"><!-- [et_pb_line_break_holder] -->        <\/p>\n<thead><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>Nominal dimension (mm)<\/th>\n<p><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>f \u2014 fine<\/th>\n<p><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>m \u2014 medium<\/th>\n<p><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>c \u2014 coarse<\/th>\n<p><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>v \u2014 very coarse<\/th>\n<p><!-- [et_pb_line_break_holder] -->          <\/tr>\n<p><!-- [et_pb_line_break_holder] -->        <\/thead>\n<p><!-- [et_pb_line_break_holder] -->        <\/p>\n<tbody><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>from 0.5 to 3<\/td>\n<td>\u00b10.20<\/td>\n<td>\u00b10.20<\/td>\n<td>\u00b10.40<\/td>\n<td>\u00b10.40<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>over 3 up to 6<\/td>\n<td>\u00b10.50<\/td>\n<td>\u00b10.50<\/td>\n<td>\u00b11.00<\/td>\n<td>\u00b11.00<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>over 6<\/td>\n<td>\u00b11.00<\/td>\n<td>\u00b11.00<\/td>\n<td>\u00b12.00<\/td>\n<td>\u00b12.00<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->        <\/tbody>\n<p><!-- [et_pb_line_break_holder] -->      <\/table>\n<p><!-- [et_pb_line_break_holder] -->    <\/div>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <pee class=\"sr-caption\">Also in this case, for nominal dimensions below 0.5 mm an individual tolerance indication is required.<\/pee><!-- [et_pb_line_break_holder] -->  <\/section>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  <\/p>\n<section class=\"sr-section\" id=\"angoli\"><!-- [et_pb_line_break_holder] -->    <\/p>\n<h2>ISO 2768-1 Tolerances for Angular Dimensions<\/h2>\n<p><!-- [et_pb_line_break_holder] -->    <pee><!-- [et_pb_line_break_holder] -->      For an angular dimension, the tolerance is not selected according to the angle value itself, but according to the <strong>length of the shorter side forming the angle<\/strong>. Values are expressed in degrees and minutes.<!-- [et_pb_line_break_holder] -->    <\/pee><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<div class=\"sr-table-wrap\"><!-- [et_pb_line_break_holder] -->      <\/p>\n<table class=\"sr-table\"><!-- [et_pb_line_break_holder] -->        <\/p>\n<thead><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>Shorter side length (mm)<\/th>\n<p><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>f \u2014 fine<\/th>\n<p><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>m \u2014 medium<\/th>\n<p><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>c \u2014 coarse<\/th>\n<p><!-- [et_pb_line_break_holder] -->            <\/p>\n<th>v \u2014 very coarse<\/th>\n<p><!-- [et_pb_line_break_holder] -->          <\/tr>\n<p><!-- [et_pb_line_break_holder] -->        <\/thead>\n<p><!-- [et_pb_line_break_holder] -->        <\/p>\n<tbody><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>up to 10<\/td>\n<td>\u00b11\u00b0<\/td>\n<td>\u00b11\u00b0<\/td>\n<td>\u00b11\u00b030\u2032<\/td>\n<td>\u00b13\u00b0<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>over 10 up to 50<\/td>\n<td>\u00b10\u00b030\u2032<\/td>\n<td>\u00b10\u00b030\u2032<\/td>\n<td>\u00b11\u00b0<\/td>\n<td>\u00b12\u00b0<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>over 50 up to 120<\/td>\n<td>\u00b10\u00b020\u2032<\/td>\n<td>\u00b10\u00b020\u2032<\/td>\n<td>\u00b10\u00b030\u2032<\/td>\n<td>\u00b11\u00b0<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>over 120 up to 400<\/td>\n<td>\u00b10\u00b010\u2032<\/td>\n<td>\u00b10\u00b010\u2032<\/td>\n<td>\u00b10\u00b015\u2032<\/td>\n<td>\u00b10\u00b030\u2032<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->          <\/p>\n<tr>\n<td>over 400<\/td>\n<td>\u00b10\u00b05\u2032<\/td>\n<td>\u00b10\u00b05\u2032<\/td>\n<td>\u00b10\u00b010\u2032<\/td>\n<td>\u00b10\u00b020\u2032<\/td>\n<\/tr>\n<p><!-- [et_pb_line_break_holder] -->        <\/tbody>\n<p><!-- [et_pb_line_break_holder] -->      <\/table>\n<p><!-- [et_pb_line_break_holder] -->    <\/div>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<div class=\"sr-note\"><!-- [et_pb_line_break_holder] -->      <strong>Example:<\/strong> for a 90\u00b0 angle with a shorter side of 80 mm, class m uses the \u201cover 50 up to 120 mm\u201d range, so the general angular deviation is \u00b10\u00b020\u2032.<!-- [et_pb_line_break_holder] -->    <\/div>\n<p><!-- [et_pb_line_break_holder] -->  <\/section>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  <\/p>\n<section class=\"sr-section\" id=\"disegno\"><!-- [et_pb_line_break_holder] -->    <\/p>\n<h2>How to Indicate ISO 2768-1 on a Technical Drawing<\/h2>\n<p><!-- [et_pb_line_break_holder] -->    <pee>The general tolerance class is normally specified in the title block or in the general notes of the drawing. An indication such as:<\/pee><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<div class=\"sr-example\"><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-example-badge\">ISO<!\u2013- [et_pb_br_holder] -\u2013>2768-m<\/div>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<div><!-- [et_pb_line_break_holder] -->        <\/p>\n<h3>Meaning of ISO 2768-m<\/h3>\n<p><!-- [et_pb_line_break_holder] -->        <pee>The letter <strong>m<\/strong> identifies the medium class of ISO 2768-1. The general tolerance applies to dimensions within the scope of the standard that do not have their own tolerance indication.<\/pee><!-- [et_pb_line_break_holder] -->        <pee>If a dimension is specified, for example, as <strong>25 \u00b10.05<\/strong>, that individual tolerance takes precedence over the general tolerance.<\/pee><!-- [et_pb_line_break_holder] -->      <\/div>\n<p><!-- [et_pb_line_break_holder] -->    <\/div>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<h3>Useful Checks Before Applying a General Tolerance<\/h3>\n<p><!-- [et_pb_line_break_holder] -->    <\/p>\n<ul class=\"sr-checklist\"><!-- [et_pb_line_break_holder] -->      <\/p>\n<li>Check that the dimension falls within the scope of the standard.<\/li>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<li>Check whether an individual tolerance is already specified on the drawing.<\/li>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<li>Correctly identify the general tolerance class stated in the title block.<\/li>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<li>Assess whether functional dimensions require a tighter or different specific tolerance.<\/li>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<li>For mating features, check whether dedicated tolerance and fit systems are required.<\/li>\n<p><!-- [et_pb_line_break_holder] -->    <\/ul>\n<p><!-- [et_pb_line_break_holder] -->  <\/section>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  <\/p>\n<section class=\"sr-section\" id=\"stato-norma\"><!-- [et_pb_line_break_holder] -->    <\/p>\n<h2>Status of ISO 2768 in 2026<\/h2>\n<p><!-- [et_pb_line_break_holder] -->    <pee><!-- [et_pb_line_break_holder] -->      At the time of publication of this page, <strong>ISO 2768-1:1989 is still current<\/strong>. However, ISO indicates that this edition is intended to be replaced by the new <strong>ISO 2768, Edition 2<\/strong>, which is currently in the publication process.<!-- [et_pb_line_break_holder] -->    <\/pee><!-- [et_pb_line_break_holder] -->    <pee><!-- [et_pb_line_break_holder] -->      The former <strong>ISO 2768-2:1989<\/strong>, concerning general geometrical tolerances, has been <strong>withdrawn<\/strong>; ISO identifies <strong>ISO 22081:2021<\/strong> as its revision\/replacement.<!-- [et_pb_line_break_holder] -->    <\/pee><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<div class=\"sr-warning\"><!-- [et_pb_line_break_holder] -->      <strong>Note:<\/strong> this page intentionally focuses on <strong>ISO 2768-1<\/strong> and dimensional tolerances. Existing drawings still frequently contain historical designations such as \u201cISO 2768-mK\u201d; however, the geometrical tolerance portion must be assessed in accordance with the current standards framework.<!-- [et_pb_line_break_holder] -->    <\/div>\n<p><!-- [et_pb_line_break_holder] -->  <\/section>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  <\/p>\n<section class=\"sr-section sr-faq\" id=\"faq\"><!-- [et_pb_line_break_holder] -->    <\/p>\n<h2>Frequently Asked Questions About ISO 2768-1 Tolerances<\/h2>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<details><!-- [et_pb_line_break_holder] -->      <\/p>\n<summary>What does ISO 2768-m mean?<\/summary>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-faq-answer\">It indicates the application of ISO 2768-1 class <strong>m (medium)<\/strong> to drawing dimensions that do not have an individual tolerance and fall within the scope of the standard.<\/div>\n<p><!-- [et_pb_line_break_holder] -->    <\/details>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<details><!-- [et_pb_line_break_holder] -->      <\/p>\n<summary>What is the ISO 2768-m tolerance for a 100 mm dimension?<\/summary>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-faq-answer\">A 100 mm dimension falls within the range over 30 up to 120 mm. In class m, the deviation is <strong>\u00b10.30 mm<\/strong>, so the limits are <strong>99.70 mm<\/strong> and <strong>100.30 mm<\/strong>.<\/div>\n<p><!-- [et_pb_line_break_holder] -->    <\/details>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<details><!-- [et_pb_line_break_holder] -->      <\/p>\n<summary>What are the ISO 2768-1 tolerance classes?<\/summary>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-faq-answer\">The four classes are <strong>f<\/strong> (fine), <strong>m<\/strong> (medium), <strong>c<\/strong> (coarse) and <strong>v<\/strong> (very coarse).<\/div>\n<p><!-- [et_pb_line_break_holder] -->    <\/details>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<details><!-- [et_pb_line_break_holder] -->      <\/p>\n<summary>Does ISO 2768-1 apply to dimensions below 0.5 mm?<\/summary>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-faq-answer\">No. For nominal dimensions below 0.5 mm, the tolerance must be specified directly next to the relevant dimension.<\/div>\n<p><!-- [et_pb_line_break_holder] -->    <\/details>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<details><!-- [et_pb_line_break_holder] -->      <\/p>\n<summary>Does a specific tolerance on the drawing take precedence over ISO 2768?<\/summary>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-faq-answer\">Yes. The general tolerance applies to dimensions without an individual tolerance indication. If a dimension has a specific tolerance, that specific indication is used.<\/div>\n<p><!-- [et_pb_line_break_holder] -->    <\/details>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<details><!-- [et_pb_line_break_holder] -->      <\/p>\n<summary>Is ISO 2768-1 used for castings?<\/summary>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-faq-answer\">The standard is mainly intended for dimensions produced by material removal or sheet-metal forming. Specific standards in the ISO 8062 series apply to casting dimensional tolerances. For a machined dimension on a casting, ISO 2768-1 may be specified when appropriate.<\/div>\n<p><!-- [et_pb_line_break_holder] -->    <\/details>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<details><!-- [et_pb_line_break_holder] -->      <\/p>\n<summary>What determines the tolerance of an angular dimension?<\/summary>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-faq-answer\">It depends on the <strong>length of the shorter side<\/strong> forming the angle. It does not depend directly on the nominal angle value.<\/div>\n<p><!-- [et_pb_line_break_holder] -->    <\/details>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    <\/p>\n<details><!-- [et_pb_line_break_holder] -->      <\/p>\n<summary>Is ISO 2768-2 still current?<\/summary>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<div class=\"sr-faq-answer\">No. ISO 2768-2:1989 has been withdrawn and replaced by ISO 22081:2021 for general geometrical specifications.<\/div>\n<p><!-- [et_pb_line_break_holder] -->    <\/details>\n<p><!-- [et_pb_line_break_holder] -->  <\/section>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  <\/p>\n<section class=\"sr-section sr-sources\" id=\"fonti\"><!-- [et_pb_line_break_holder] -->    <\/p>\n<h2>Standards References<\/h2>\n<p><!-- [et_pb_line_break_holder] -->    <pee>The content and calculator are provided for information purposes and do not replace purchasing or consulting the official standard applicable to the project.<\/pee><!-- [et_pb_line_break_holder] -->    <\/p>\n<ul><!-- [et_pb_line_break_holder] -->      <\/p>\n<li><a href=\"https:\/\/www.iso.org\/standard\/7748.html\" target=\"_blank\" rel=\"noopener\">ISO 2768-1:1989 \u2014 official ISO page<\/a><\/li>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<li><a href=\"https:\/\/www.iso.org\/standard\/85741.html\" target=\"_blank\" rel=\"noopener\">ISO 2768, Edition 2 \u2014 development\/publication status<\/a><\/li>\n<p><!-- [et_pb_line_break_holder] -->      <\/p>\n<li><a href=\"https:\/\/www.iso.org\/standard\/72514.html\" target=\"_blank\" rel=\"noopener\">ISO 22081:2021 \u2014 official ISO page<\/a><\/li>\n<p><!-- [et_pb_line_break_holder] -->    <\/ul>\n<p><!-- [et_pb_line_break_holder] -->  <\/section>\n<p><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] --><\/main><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] --><script><!-- [et_pb_line_break_holder] -->(function(){<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  const linearRanges = [<!-- [et_pb_line_break_holder] -->    { min:0.5, max:3,    label:\"from 0.5 to 3 mm\",             f:0.05, m:0.10, c:0.20, v:null },<!-- [et_pb_line_break_holder] -->    { min:3,   max:6,    label:\"over 3 up to 6 mm\",           f:0.05, m:0.10, c:0.30, v:0.50 },<!-- [et_pb_line_break_holder] -->    { min:6,   max:30,   label:\"over 6 up to 30 mm\",          f:0.10, m:0.20, c:0.50, v:1.00 },<!-- [et_pb_line_break_holder] -->    { min:30,  max:120,  label:\"over 30 up to 120 mm\",        f:0.15, m:0.30, c:0.80, v:1.50 },<!-- [et_pb_line_break_holder] -->    { min:120, max:400,  label:\"over 120 up to 400 mm\",       f:0.20, m:0.50, c:1.20, v:2.50 },<!-- [et_pb_line_break_holder] -->    { min:400, max:1000, label:\"over 400 up to 1000 mm\",      f:0.30, m:0.80, c:2.00, v:4.00 },<!-- [et_pb_line_break_holder] -->    { min:1000,max:2000, label:\"over 1000 up to 2000 mm\",     f:0.50, m:1.20, c:3.00, v:6.00 },<!-- [et_pb_line_break_holder] -->    { min:2000,max:4000, label:\"over 2000 up to 4000 mm\",     f:null, m:2.00, c:4.00, v:8.00 }<!-- [et_pb_line_break_holder] -->  ];<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  const radiusRanges = [<!-- [et_pb_line_break_holder] -->    { min:0.5, max:3, label:\"from 0.5 to 3 mm\", f:0.20, m:0.20, c:0.40, v:0.40 },<!-- [et_pb_line_break_holder] -->    { min:3,   max:6, label:\"over 3 up to 6 mm\", f:0.50, m:0.50, c:1.00, v:1.00 },<!-- [et_pb_line_break_holder] -->    { min:6,   max:Infinity, label:\"over 6 mm\", f:1.00, m:1.00, c:2.00, v:2.00 }<!-- [et_pb_line_break_holder] -->  ];<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  const angleRanges = [<!-- [et_pb_line_break_holder] -->    { min:0,   max:10,       label:\"up to 10 mm\",              f:60, m:60, c:90, v:180 },<!-- [et_pb_line_break_holder] -->    { min:10,  max:50,       label:\"over 10 up to 50 mm\",      f:30, m:30, c:60, v:120 },<!-- [et_pb_line_break_holder] -->    { min:50,  max:120,      label:\"over 50 up to 120 mm\",     f:20, m:20, c:30, v:60 },<!-- [et_pb_line_break_holder] -->    { min:120, max:400,      label:\"over 120 up to 400 mm\",    f:10, m:10, c:15, v:30 },<!-- [et_pb_line_break_holder] -->    { min:400, max:Infinity, label:\"over 400 mm\",               f:5,  m:5,  c:10, v:20 }<!-- [et_pb_line_break_holder] -->  ];<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  let selectedClass = \"m\";<!-- [et_pb_line_break_holder] -->  let selectedType = \"linear\";<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  const inputLinear = document.getElementById(\"srNominale\");<!-- [et_pb_line_break_holder] -->  const inputRadius = document.getElementById(\"srRaggio\");<!-- [et_pb_line_break_holder] -->  const inputAngle = document.getElementById(\"srAngolo\");<!-- [et_pb_line_break_holder] -->  const inputSide = document.getElementById(\"srLato\");<!-- [et_pb_line_break_holder] -->  const result = document.getElementById(\"srResult\");<!-- [et_pb_line_break_holder] -->  const calcBtn = document.getElementById(\"srCalcola\");<!-- [et_pb_line_break_holder] -->  const resetBtn = document.getElementById(\"srReset\");<!-- [et_pb_line_break_holder] -->  const classBtns = document.querySelectorAll(\".sr-tol-btn\");<!-- [et_pb_line_break_holder] -->  const typeBtns = document.querySelectorAll(\"#srTypeGroup .sr-class-btn\");<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  function parseNumber(value){<!-- [et_pb_line_break_holder] -->    if (typeof value !== \"string\") return NaN;<!-- [et_pb_line_break_holder] -->    return Number(value.trim().replace(\/\\s\/g,\"\").replace(\",\",\".\"));<!-- [et_pb_line_break_holder] -->  }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  function formatNumber(value){<!-- [et_pb_line_break_holder] -->    return value.toLocaleString(\"en-US\", {<!-- [et_pb_line_break_holder] -->      minimumFractionDigits:2,<!-- [et_pb_line_break_holder] -->      maximumFractionDigits:2<!-- [et_pb_line_break_holder] -->    });<!-- [et_pb_line_break_holder] -->  }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  function className(code){<!-- [et_pb_line_break_holder] -->    return {<!-- [et_pb_line_break_holder] -->      f:\"f \u2014 fine\",<!-- [et_pb_line_break_holder] -->      m:\"m \u2014 medium\",<!-- [et_pb_line_break_holder] -->      c:\"c \u2014 coarse\",<!-- [et_pb_line_break_holder] -->      v:\"v \u2014 very coarse\"<!-- [et_pb_line_break_holder] -->    }[code];<!-- [et_pb_line_break_holder] -->  }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  function findRange(ranges, n){<!-- [et_pb_line_break_holder] -->    return ranges.find((r, index) => {<!-- [et_pb_line_break_holder] -->      if (index === 0) return n >= r.min && n <= r.max;<!-- [et_pb_line_break_holder] -->      return n > r.min && n <= r.max;<!-- [et_pb_line_break_holder] -->    });<!-- [et_pb_line_break_holder] -->  }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  function showError(message){<!-- [et_pb_line_break_holder] -->    result.className = \"sr-result sr-result-error is-visible\";<!-- [et_pb_line_break_holder] -->    result.innerHTML = '<\/p>\n<div class=\"sr-result-title\">Warning<\/div>\n<p><strong>' + message + '<\/strong>';<!-- [et_pb_line_break_holder] -->  }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  function formatAngleMinutes(totalMinutes){<!-- [et_pb_line_break_holder] -->    const sign = totalMinutes < 0 ? \"-\" : \"\";<!-- [et_pb_line_break_holder] -->    const abs = Math.abs(totalMinutes);<!-- [et_pb_line_break_holder] -->    const deg = Math.floor(abs \/ 60);<!-- [et_pb_line_break_holder] -->    const min = Math.round(abs % 60);<!-- [et_pb_line_break_holder] -->    return sign + deg + \"\u00b0\" + (min > 0 ? String(min).padStart(2,\"0\") + \"\u2032\" : \"\");<!-- [et_pb_line_break_holder] -->  }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  function showLinear(){<!-- [et_pb_line_break_holder] -->    const nominal = parseNumber(inputLinear.value);<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    if (!Number.isFinite(nominal)){<!-- [et_pb_line_break_holder] -->      showError(\"Enter a valid numerical dimension.\");<!-- [et_pb_line_break_holder] -->      return;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] -->    if (nominal < 0.5){<!-- [et_pb_line_break_holder] -->      showError(\"For nominal dimensions below 0.5 mm, the tolerance must be specified directly on the drawing.\");<!-- [et_pb_line_break_holder] -->      return;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] -->    if (nominal > 4000){<!-- [et_pb_line_break_holder] -->      showError(\"The linear dimension calculator covers dimensions up to 4000 mm.\");<!-- [et_pb_line_break_holder] -->      return;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    const range = findRange(linearRanges, nominal);<!-- [et_pb_line_break_holder] -->    const tolerance = range ? range[selectedClass] : null;<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    if (!range){<!-- [et_pb_line_break_holder] -->      showError(\"The dimensional range could not be determined.\");<!-- [et_pb_line_break_holder] -->      return;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] -->    if (tolerance === null){<!-- [et_pb_line_break_holder] -->      showError(\"For the dimension \" + formatNumber(nominal) + \" mm, class \" + className(selectedClass) + \" has no specified value in the table.\");<!-- [et_pb_line_break_holder] -->      return;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    result.className = \"sr-result is-visible\";<!-- [et_pb_line_break_holder] -->    result.innerHTML =<!-- [et_pb_line_break_holder] -->      '<\/p>\n<div class=\"sr-result-title\">Linear dimension \u00b7 ISO 2768-1 \u00b7 class ' + selectedClass + '<\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->      '<\/p>\n<div class=\"sr-result-grid\">' +<!-- [et_pb_line_break_holder] -->        '<\/p>\n<div class=\"sr-result-card\"><small>Tolerance<\/small><strong>\u00b1' + formatNumber(tolerance) + ' mm<\/strong><\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->        '<\/p>\n<div class=\"sr-result-card\"><small>Lower limit<\/small><strong>' + formatNumber(nominal - tolerance) + ' mm<\/strong><\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->        '<\/p>\n<div class=\"sr-result-card\"><small>Upper limit<\/small><strong>' + formatNumber(nominal + tolerance) + ' mm<\/strong><\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->      '<\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->      '<\/p>\n<div class=\"sr-result-note\">Nominal dimension: <strong>' + formatNumber(nominal) + ' mm<\/strong> \u00b7 Class: <strong>' + className(selectedClass) + '<\/strong> \u00b7 Range: <strong>' + range.label + '<\/strong>.<\/div>\n<p>';<!-- [et_pb_line_break_holder] -->  }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  function showRadius(){<!-- [et_pb_line_break_holder] -->    const nominal = parseNumber(inputRadius.value);<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    if (!Number.isFinite(nominal)){<!-- [et_pb_line_break_holder] -->      showError(\"Enter a valid numerical value for the radius or chamfer.\");<!-- [et_pb_line_break_holder] -->      return;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] -->    if (nominal < 0.5){<!-- [et_pb_line_break_holder] -->      showError(\"For radii or chamfer heights below 0.5 mm, the tolerance must be specified directly on the drawing.\");<!-- [et_pb_line_break_holder] -->      return;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    const range = findRange(radiusRanges, nominal);<!-- [et_pb_line_break_holder] -->    const tolerance = range ? range[selectedClass] : null;<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    if (!range || tolerance === null){<!-- [et_pb_line_break_holder] -->      showError(\"The tolerance could not be determined.\");<!-- [et_pb_line_break_holder] -->      return;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    result.className = \"sr-result is-visible\";<!-- [et_pb_line_break_holder] -->    result.innerHTML =<!-- [et_pb_line_break_holder] -->      '<\/p>\n<div class=\"sr-result-title\">Radius \/ Chamfer \u00b7 ISO 2768-1 \u00b7 class ' + selectedClass + '<\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->      '<\/p>\n<div class=\"sr-result-grid\">' +<!-- [et_pb_line_break_holder] -->        '<\/p>\n<div class=\"sr-result-card\"><small>Tolerance<\/small><strong>\u00b1' + formatNumber(tolerance) + ' mm<\/strong><\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->        '<\/p>\n<div class=\"sr-result-card\"><small>Lower limit<\/small><strong>' + formatNumber(nominal - tolerance) + ' mm<\/strong><\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->        '<\/p>\n<div class=\"sr-result-card\"><small>Upper limit<\/small><strong>' + formatNumber(nominal + tolerance) + ' mm<\/strong><\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->      '<\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->      '<\/p>\n<div class=\"sr-result-note\">Nominal value: <strong>' + formatNumber(nominal) + ' mm<\/strong> \u00b7 Class: <strong>' + className(selectedClass) + '<\/strong> \u00b7 Range: <strong>' + range.label + '<\/strong>.<\/div>\n<p>';<!-- [et_pb_line_break_holder] -->  }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  function showAngle(){<!-- [et_pb_line_break_holder] -->    const angle = parseNumber(inputAngle.value);<!-- [et_pb_line_break_holder] -->    const side = parseNumber(inputSide.value);<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    if (!Number.isFinite(angle)){<!-- [et_pb_line_break_holder] -->      showError(\"Enter a valid nominal angle.\");<!-- [et_pb_line_break_holder] -->      return;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] -->    if (!Number.isFinite(side) || side <= 0){<!-- [et_pb_line_break_holder] -->      showError(\"Enter the length of the shorter side in millimetres.\");<!-- [et_pb_line_break_holder] -->      return;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    const range = findRange(angleRanges, side);<!-- [et_pb_line_break_holder] -->    const toleranceMinutes = range ? range[selectedClass] : null;<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    if (!range || toleranceMinutes === null){<!-- [et_pb_line_break_holder] -->      showError(\"The angular tolerance could not be determined.\");<!-- [et_pb_line_break_holder] -->      return;<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    const nominalMinutes = angle * 60;<!-- [et_pb_line_break_holder] -->    const minMinutes = nominalMinutes - toleranceMinutes;<!-- [et_pb_line_break_holder] -->    const maxMinutes = nominalMinutes + toleranceMinutes;<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    result.className = \"sr-result is-visible\";<!-- [et_pb_line_break_holder] -->    result.innerHTML =<!-- [et_pb_line_break_holder] -->      '<\/p>\n<div class=\"sr-result-title\">Angular dimension \u00b7 ISO 2768-1 \u00b7 class ' + selectedClass + '<\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->      '<\/p>\n<div class=\"sr-result-grid\">' +<!-- [et_pb_line_break_holder] -->        '<\/p>\n<div class=\"sr-result-card\"><small>Tolerance<\/small><strong>\u00b1' + formatAngleMinutes(toleranceMinutes) + '<\/strong><\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->        '<\/p>\n<div class=\"sr-result-card\"><small>Minimum angle<\/small><strong>' + formatAngleMinutes(minMinutes) + '<\/strong><\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->        '<\/p>\n<div class=\"sr-result-card\"><small>Maximum angle<\/small><strong>' + formatAngleMinutes(maxMinutes) + '<\/strong><\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->      '<\/div>\n<p>' +<!-- [et_pb_line_break_holder] -->      '<\/p>\n<div class=\"sr-result-note\">Nominal angle: <strong>' + angle.toLocaleString(\"en-US\") + '\u00b0<\/strong> \u00b7 Shorter side: <strong>' + formatNumber(side) + ' mm<\/strong> \u00b7 Class: <strong>' + className(selectedClass) + '<\/strong> \u00b7 Range: <strong>' + range.label + '<\/strong>.<\/div>\n<p>';<!-- [et_pb_line_break_holder] -->  }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  function calculate(){<!-- [et_pb_line_break_holder] -->    if (selectedType === \"linear\") showLinear();<!-- [et_pb_line_break_holder] -->    else if (selectedType === \"radius\") showRadius();<!-- [et_pb_line_break_holder] -->    else showAngle();<!-- [et_pb_line_break_holder] -->  }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  function switchType(type){<!-- [et_pb_line_break_holder] -->    selectedType = type;<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    document.getElementById(\"srLinearFields\").style.display = type === \"linear\" ? \"\" : \"none\";<!-- [et_pb_line_break_holder] -->    document.getElementById(\"srRadiusFields\").style.display = type === \"radius\" ? \"\" : \"none\";<!-- [et_pb_line_break_holder] -->    document.getElementById(\"srAngleFields\").style.display = type === \"angle\" ? \"\" : \"none\";<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    result.className = \"sr-result\";<!-- [et_pb_line_break_holder] -->    result.innerHTML = \"\";<!-- [et_pb_line_break_holder] -->  }<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  typeBtns.forEach(function(btn){<!-- [et_pb_line_break_holder] -->    btn.addEventListener(\"click\", function(){<!-- [et_pb_line_break_holder] -->      typeBtns.forEach(function(b){ b.classList.remove(\"is-active\"); });<!-- [et_pb_line_break_holder] -->      btn.classList.add(\"is-active\");<!-- [et_pb_line_break_holder] -->      switchType(btn.getAttribute(\"data-type\"));<!-- [et_pb_line_break_holder] -->    });<!-- [et_pb_line_break_holder] -->  });<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  classBtns.forEach(function(btn){<!-- [et_pb_line_break_holder] -->    btn.addEventListener(\"click\", function(){<!-- [et_pb_line_break_holder] -->      classBtns.forEach(function(b){ b.classList.remove(\"is-active\"); });<!-- [et_pb_line_break_holder] -->      btn.classList.add(\"is-active\");<!-- [et_pb_line_break_holder] -->      selectedClass = btn.getAttribute(\"data-class\");<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->      if (<!-- [et_pb_line_break_holder] -->        (selectedType === \"linear\" && inputLinear.value.trim() !== \"\") ||<!-- [et_pb_line_break_holder] -->        (selectedType === \"radius\" && inputRadius.value.trim() !== \"\") ||<!-- [et_pb_line_break_holder] -->        (selectedType === \"angle\" && inputAngle.value.trim() !== \"\" && inputSide.value.trim() !== \"\")<!-- [et_pb_line_break_holder] -->      ){<!-- [et_pb_line_break_holder] -->        calculate();<!-- [et_pb_line_break_holder] -->      }<!-- [et_pb_line_break_holder] -->    });<!-- [et_pb_line_break_holder] -->  });<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  [inputLinear, inputRadius, inputAngle, inputSide].forEach(function(input){<!-- [et_pb_line_break_holder] -->    input.addEventListener(\"keydown\", function(e){<!-- [et_pb_line_break_holder] -->      if (e.key === \"Enter\") calculate();<!-- [et_pb_line_break_holder] -->    });<!-- [et_pb_line_break_holder] -->  });<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  calcBtn.addEventListener(\"click\", calculate);<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->  resetBtn.addEventListener(\"click\", function(){<!-- [et_pb_line_break_holder] -->    inputLinear.value = \"\";<!-- [et_pb_line_break_holder] -->    inputRadius.value = \"\";<!-- [et_pb_line_break_holder] -->    inputAngle.value = \"\";<!-- [et_pb_line_break_holder] -->    inputSide.value = \"\";<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    selectedClass = \"m\";<!-- [et_pb_line_break_holder] -->    selectedType = \"linear\";<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    classBtns.forEach(function(b){<!-- [et_pb_line_break_holder] -->      b.classList.toggle(\"is-active\", b.getAttribute(\"data-class\") === \"m\");<!-- [et_pb_line_break_holder] -->    });<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    typeBtns.forEach(function(b){<!-- [et_pb_line_break_holder] -->      b.classList.toggle(\"is-active\", b.getAttribute(\"data-type\") === \"linear\");<!-- [et_pb_line_break_holder] -->    });<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->    switchType(\"linear\");<!-- [et_pb_line_break_holder] -->    inputLinear.focus();<!-- [et_pb_line_break_holder] -->  });<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->})();<!-- [et_pb_line_break_holder] --><\/script><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] --><script type=\"application\/ld+json\"><!-- [et_pb_line_break_holder] -->{<!-- [et_pb_line_break_holder] -->  \"@context\":\"https:\/\/schema.org\",<!-- [et_pb_line_break_holder] -->  \"@type\":\"Article\",<!-- [et_pb_line_break_holder] -->  \"headline\":\"ISO 2768-1 General Tolerances: Tables and Calculator\",<!-- [et_pb_line_break_holder] -->  \"description\":\"Guide to ISO 2768-1 general tolerances with calculator for linear dimensions, tables for classes f, m, c, v, radii, chamfers and angles.\",<!-- [et_pb_line_break_holder] -->  \"publisher\":{<!-- [et_pb_line_break_holder] -->    \"@type\":\"Organization\",<!-- [et_pb_line_break_holder] -->    \"name\":\"SR Tech\"<!-- [et_pb_line_break_holder] -->  },<!-- [et_pb_line_break_holder] -->  \"inLanguage\":\"en\"<!-- [et_pb_line_break_holder] -->}<!-- [et_pb_line_break_holder] --><\/script><!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] --><script type=\"application\/ld+json\"><!-- [et_pb_line_break_holder] -->{<!-- [et_pb_line_break_holder] -->  \"@context\":\"https:\/\/schema.org\",<!-- [et_pb_line_break_holder] -->  \"@type\":\"FAQPage\",<!-- [et_pb_line_break_holder] -->  \"mainEntity\":[<!-- [et_pb_line_break_holder] -->    {<!-- [et_pb_line_break_holder] -->      \"@type\":\"Question\",<!-- [et_pb_line_break_holder] -->      \"name\":\"What does ISO 2768-m mean?\",<!-- [et_pb_line_break_holder] -->      \"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It indicates the application of ISO 2768-1 class m, medium, to dimensions without an individual tolerance and within the scope of the standard.\"}<!-- [et_pb_line_break_holder] -->    },<!-- [et_pb_line_break_holder] -->    {<!-- [et_pb_line_break_holder] -->      \"@type\":\"Question\",<!-- [et_pb_line_break_holder] -->      \"name\":\"What is the ISO 2768-m tolerance for a 100 mm dimension?\",<!-- [et_pb_line_break_holder] -->      \"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"For 100 mm in class m, the deviation is \u00b10.30 mm; the limits are 99.70 mm and 100.30 mm.\"}<!-- [et_pb_line_break_holder] -->    },<!-- [et_pb_line_break_holder] -->    {<!-- [et_pb_line_break_holder] -->      \"@type\":\"Question\",<!-- [et_pb_line_break_holder] -->      \"name\":\"What are the ISO 2768-1 tolerance classes?\",<!-- [et_pb_line_break_holder] -->      \"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The classes are f fine, m medium, c coarse and v very coarse.\"}<!-- [et_pb_line_break_holder] -->    },<!-- [et_pb_line_break_holder] -->    {<!-- [et_pb_line_break_holder] -->      \"@type\":\"Question\",<!-- [et_pb_line_break_holder] -->      \"name\":\"Is ISO 2768-2 still current?\",<!-- [et_pb_line_break_holder] -->      \"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. ISO 2768-2:1989 has been withdrawn; ISO identifies ISO 22081:2021 as its revision\/replacement.\"}<!-- [et_pb_line_break_holder] -->    }<!-- [et_pb_line_break_holder] -->  ]<!-- [et_pb_line_break_holder] -->}<!-- [et_pb_line_break_holder] 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