The Wolbert microhardness testers 401-MVD and 401-MVA are a manual turret hardness tester with automatic loading of test force. The difference lies in the built-in printer of the 401-MVD model, which uses a digital encoder, while the 401-MVA model not only does not have printing function, but the encoder is analog. The following is a comparison table of the parameters of these two models.

1、 Technical parameters of Wolbert microhardness tester 401-MVD type

1. Automatic input of indentation readings;

2. LCD screen display;

3. Dual light path;

4. XY platform, minimum reading 0.01mm;

5. Hardness Scale: HV0.01, HV0.025, HV0.05, HV0.1, HV0.2, HV0.3, HV0.5, HV1

6. Test force: 10-25-50-100-200-300-500-1000gf

7. Test force selection: Test force selection handwheel

8. Accuracy: Complies with EN-ISO 6507, ASTM, and JIS

9. Test force loading method: automatic (loading/holding/unloading)

10. Load holding time: 5-99 seconds

11. Rotary Tower: Manual

12. Eyepiece magnification: 10x

13. Digital Encoder: Standard

14. Hardness value resolution: 0.1 µ m;

15. Objective magnification: 10x, 40x

2、 Wobert microhardness tester 401-MVD attachment

1. Analog Encoder: Standard

2. Hardness value resolution: 0.25 µ m