Do you need metrological verification?

The measuring tools listed in the national mandatory inspection catalog of the Sedolis balance, if used for trade settlement, safety protection, medical and health recovery, environmental monitoring, and if used as measuring standards, must be included

Few industry standards require mandatory calibration; In addition, calibration should be carried out uniformly; Of course, calibration can only be carried out after establishing measurement standards and obtaining qualification certificates for measurement standards.

Develop a clear verification procedure that must specify the content of the verification, the method of determination, and the standards. And the measured standard parts can be traced back to their source. Higher level standard parts are required for calibration and classification

For example: 1. Verify the vernier caliper; 2. The verticality should be checked in the national standard; 3. Tightness of fit, etc.

For the verification of internal and external cards, it is compared and verified with standard measuring blocks according to the national standard. But if there is no standard measuring block, you can also use a caliper as a standard part and compare it with it. A caliper external calibration,