O-type Drill Gauge

Description

The utility model drill bit gauge is a multi-functional drill gauge capable of measuring the diameter of the drill bit, the stabilizer and the joint buckle type, and includes a caliper and a calibration ruler. The calibration ruler is mounted on the caliper. When using, the two ends of the caliper are stuck on any two edges of the stabilizer. See the calibration scale reading to know the diameter of the stabilizer. The drill gauge has the advantages of simple structure, light weight, easy manufacture, low cost, good use effect, and can measure the diameter of various types of drills and stabilizers and the joint buckle type.

Specification