Vernier caliper
The vernier caliper is used to measure the precision of internal and external circles, as well as the thickness of parts. The precision is 0.02mm.

Micrometer screw gauge
The micrometer screw gauge is used to measure the precision of an external circle and the thickness of parts as well. The precision is 0.01mm.

Dial bore gauge
The dial bore gauge provides an accurate method of measuring a deep bore. It is usually used when the vernier caliper or micrometer screw gauge cannot satisfy users' demands. The precision is 0.01mm.

Dial indicator
The dial indicator is an ideal long-reaching inner bore gauging system. It is usually used for bore measuring when the vernier caliper or micrometer screw gauge cannot meet clients' measuring demands. It can be used in combination with a dial bore gauge. The precision is 0.01mm.