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适用范围：<p>These test methods shall be used where precise dimensions are necessary for the calculation of properties expressed in physical units. They are not intended to replace practical thickness measurements based on commercial portable tools, nor is it implied that thickness measurements made by the procedures will agree exactly.</p><p id="s00002">1.1 These test methods cover determination of the physical dimensions of solid plastic specimens where the dimensions are used directly in determining the results of tests for various properties. Use these test methods except as otherwise required in material specifications.</p> <p id="s00003">1.2 The values stated in SI units are to be regarded as standard.</p> <p id="s00004">1.3 <span class="italic">This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. <p class="desc" id="N00001"> <span class="smallcap">Note</span> 18212;This standard and ISO 16012 address the same subject matter, but differ in technical content.</p> </span>