GB/T 21390-2008
ActiveVernier, dial and digital display height callipers
游标、带表和数显高度卡尺
Application Summary AI generated
GB/T 21390-2008 specifies the technical requirements, inspection methods, and marking for vernier, dial, and digital display height callipers used in precision measurement. It applies to the manufacturing and quality verification of these instruments in industrial metrology, machining, and quality control laboratories. The standard ensures accuracy and consistency in measuring vertical distances on workpieces, such as in mechanical part inspection and tool setup.
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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.