MICROMETER 0-25 O/S CHINESE

Micrometer  –  Chinese  

0 – 25mm  

Outside  

A micrometer, sometimes known as a micrometer screw gauge, is a device incorporating a calibrated screw widely used for accurate measurement of components in mechanical engineering and machining as well as most mechanical trades, along with other metrological instruments such as dial, vernier, and digital calipers.