Surface Roughness Tester with Long Range (Ra, Rz, Rq, Rt)
Description
Description
Key Features
- External calibration keyboard
- Pocket size and easy to carry
- Select freely from Ra, Rz, Rq,Rt parameters
- Wide range of measurement
Technical Specifications
|  Testing parameters (μm) | Ra, Rz, Rq, Rt |
| Stroke length | 6mm or 0.2 inch |
| Sample length | 0.25, 0.80, 2.50 mm or 0.01, 0.03, 0.1 inch |
| Evaluation length | Â 1.25, 4.0mm or 0.05, 0.16 inch |
| Measurement range (μm) | Ra, Rq: 0.05 ~ 10.0 ; Rz, Rt: 0.1~50 |
| Error | ±15% |
| Variability | <12% |
| Contacting pin round diameter | 10 μm ± 1 μm |
| Battery | 3.7V Li |
| Size | 106x70x24 mm or 4.2×2.8×0.9 inch |
| Weight | 200g |
| Stylus static force | ≤0.016N |
| Force measuring rate of change |  ≤800N/m |
| Operating condition | Temperature -20 ~ 60°C (-4~140°F); Relative humidity <90% |