Digital outer diameter micrometer 293-821-30

Sanfeng Digital Outer Diameter Micrometer293-821-30：

1. The battery life reaches about 2.4 years, reducing tedious battery replacement.

2. Simple design, no need to integrate output data, achieving low cost.

3. The design of only one origin setting button simplifies the operation.

4. A device with constant force measurement.

5. The measuring surface is made of hard alloy.