Threaded plug is mainly used in the measurement of product diameter. Threaded plug should be qualified the relevant inspection agencies inspection measurement measurement, can be used in production field.
1, first of all to clean up the thread measured oil and impurities, and then in the thread and the measured thread right now, with the thumb and index finger ring rotation, to spin in the free state together through all thread length determination qualified, otherwise not to judge.
2, before use should be qualified by the metrological inspection agency related measurement, and then in the threaded and the measured threaded right now, with the thumb and index finger ring rotation, screw length within 2 pitch for qualified, otherwise as unqualified products.
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