GB/T 16857.2-2017

This standard specifies the acceptance and reverification tests for coordinate measuring machines (CMMs) used to measure linear dimensions, defining procedures to verify that a CMM meets its specified accuracy requirements. It is applied in manufacturing and quality control environments, particularly in mechanical engineering and precision parts production, to ensure CMMs are correctly calibrated and capable of producing reliable linear measurements. The standard is used during initial machine installation (acceptance) and periodic checks (reverification) to maintain measurement traceability and compliance with geometrical product specifications.