<p>This document illustrates the ambiguity caused by the use of dimensional specifications to control properties other than linear or angular size and the benefit of using geometrical specifications instead.</p>
<p>Dimensional tolerancing can be indicated by ± tolerancing or geometrical specifications.</p>
<p>The ambiguity caused by using ± tolerances for dimensions other than linear or angular sizes (for individual tolerances and general tolerances according to, e.g. ISO 2768-1 and ISO 8062-3) is explained in Annex A.</p>
<p>NOTE 1 The figures, as shown in this document, merely illustrate the text and are not intended to reflect actual usage. The figures are consequently simplified to indicate only the relevant principles.</p>
<p>NOTE 2 For indications of dimensional specifications, see the following:</p>
<p>— ISO 14405-1 for linear size;</p>
<p>— ISO 14405-3 for angular size;</p>
<p>— ISO 2538-1 and ISO 2538-2 for wedges;</p>
<p>— ISO 3040 for cones.</p>
<p>NOTE 3 The rules for geometrical specifications are given in ISO 1101.</p>
Registration number (WIID)
75447
Scope
<p>This document illustrates the ambiguity caused by the use of dimensional specifications to control properties other than linear or angular size and the benefit of using geometrical specifications instead.</p>
<p>Dimensional tolerancing can be indicated by ± tolerancing or geometrical specifications.</p>
<p>The ambiguity caused by using ± tolerances for dimensions other than linear or angular sizes (for individual tolerances and general tolerances according to, e.g. ISO 2768-1 and ISO 8062-3) is explained in Annex A.</p>
<p>NOTE 1 The figures, as shown in this document, merely illustrate the text and are not intended to reflect actual usage. The figures are consequently simplified to indicate only the relevant principles.</p>
<p>NOTE 2 For indications of dimensional specifications, see the following:</p>
<p>— ISO 14405-1 for linear size;</p>
<p>— ISO 14405-3 for angular size;</p>
<p>— ISO 2538-1 and ISO 2538-2 for wedges;</p>
<p>— ISO 3040 for cones.</p>
<p>NOTE 3 The rules for geometrical specifications are given in ISO 1101.</p>
