Surface Roughness Tester MR-110

Features: 1. The roughness of metal and non-metallic surface 2. Pocket-size & economically price 3. Large measuring range suitable for most materials 4. Features external calibration at keyboard 5. Optimized electric circuit design with transducer structure-design, high integrate power, driver and display. 6. Select freely with Ra, Rz, Rq, Rt parameters. 7. It could test ex-circle, flat surface, conical surface and also test groove with length and width larger than80* 30mm Specifications: 1. Testing parameters ( m) : Ra, Rz, Rq, Rt 2. Stroke length ( mm) : 6 3. Sample length ( mm) : 0.25, 0.80, 2.50 4. Evaluation length ( mm) : 1.25, 4.0 5. Measuring range ( m) Ra: 0.05 ~ 10.0; Rz: 0.1 ~ 50 6. Error: 15% 7. Variability  12% 8. Transducer contacting pin round diameter and angle 9. Contacting pin round diameter: 10 m 1 m 10. Battery: 3.7V Li 11. Size: 106 mm 70 mm 24 mm 12. Weight: 200g 13. Sensor needle static force and its rate of change: Stylus static force: d 0.016N; Force measuring rate of change: d 800N/ m 14.Working conditions: Temperature: -20 ^ 40 ; Relative humidity: < 90%