GB/T 21388-2008
ActiveVernier, dial and digital display depth callipers
游标、带表和数显深度卡尺
Application Summary AI generated
GB/T 21388-2008 specifies the technical requirements, inspection methods, and accuracy grades for vernier, dial, and digital display depth callipers used in precision measurement. It applies to depth callipers with measuring ranges up to 500 mm, commonly employed in mechanical manufacturing, quality control, and calibration laboratories for measuring the depth of holes, grooves, and recesses. The standard ensures consistency and reliability in dimensional measurements across industrial production and metrological verification processes.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.