Technical Specifications:
1. Hardness scale: HL, HB, HRB, HRC, HRA, HV, HS
2. Measuring range: HLD (170-960), HRC (17.9-69.5), HB (19-683),   HV (80-1042), HS (30.6-102.6), HRA(59.1-88),   HRB (13.5-101.7)
3. Display LCD: dot matrix LCD,  128×64 dots
4. Data memory: 500 groups max.（relative to impact times 32～1）
5. Printing paper: width is （57.5±0.5）mm, diameter is 30mm
6. Standard Impact Device: D 
7. Optional Impact Devices: DC, D+15, G, C, DL
8. Communication interface: USB2.0
9. Dimensions: 210 x 85 x 45mm (main unit)