Caliper is a measuring device for fast distance measurement with high accuracy and precision. Are used to measure: external, internal, height, depth.
There are calipers for special measurements such as: three-point calipers for measuring the external dimensions of 3-, 6- and 12-edge tools; callipers for internal measurements; callipers for discs and brake drums.
Depending on the type of measurement reading, a distinction is made between:
-Vernier callipers: the bar scale on the guide and the vernier on the slider
-Electronic calipers: capacitive scale on the guide and electronic display
-Dial calipers: a toothed bar on the guide and a dial indicator