| Zero drift | ≤0.1 |
| Indication drift | ≤0.1 |
| Error of indication | ≤0.5 |
| Repeatability | ≤0.1 |
| Mirror reflection error | ≤0.1 |
| Specimen size | The test plane is not less than φ 30mm, and the thickness of the sample is not more than 40mm. |
| Power Supply | AC 170~264V, 50Hz, 0.2A |
| Operating Environment | Temperature 0~40 ℃, Relative Humidity does not exceed 85% |
| Weight | 11kg |
| Dimensions | 365×260×425mm |
None