Ceramics Thread Plug Gauge：Thread plug gauges made of ceramic, used to inspect male thread. The passing side and stopping side make up a single set. The thread is considered to be acceptable if the passing side passes with ease and the stopping side does not cut in after two rotations. Limit thread plug gauge , according to the requirements of different specifications, the GO and NOGO are slightly different, such as the ISO standard GP-NP or the JIS standard GP-WP (IP).
