Descriptions：

1. Split structure of main and auxiliary machine, convenient for on-site measurement.
2. 3-channel test light source, powerful anti-interference ability.
3. Built-in rechargeable lithium battery, with one to two USB charging cable can be charged simultaneously.
4. Laser alignment function ensures that main machine and secondary machine are aligned when measuring.
5. Data lock function, easy to remove from the sample under test to view the data.

6. High precision, to ensure that it can pass the test of the authoritative metrological institute.