Technical parameters: 
 1. Measuring range: (170-960) HLD, (17.9-69.5) HRC, (19-683) HB, (80-1042) HV, (30.6-102.6) HS, 
 (59.1-88) HRA, (13.5-101.7) HRB 
 2. Measuring direction: support the 360 ??o (vertical downward slope, the horizontal, oblique, and vertical up) 
 3. Hardness standard: Richter (HL), Brinell (HB), Rockwell A (HRA), Rockwell B (HRB), Rockwell C (HRC), Vickers (HV), Shaw (HS) 
 4. Test accuracy: indication error ± 4HLD, Repeatability ± 4HLD 
 5. Measuring material: steel and cast steel, alloy tool steel, stainless steel, gray iron, ductile iron, cast aluminum, zinc alloy (brass), copper-tin alloy (bronze), copper, forged steel 
 6. Optional impact devices: D, DC, DL, C, D +15, E, G 
 7. Display: dot matrix LCD, 128 × 64 dot matrix LCD 
 8. Data storage: maximum of 500 groups (each impact times 32 ~ 1) 
 9. Operating voltage: 3V (two 5 alkaline batteries) 
 10. Host continuous working time: about 100 hours (without backlight) 
 11. Dimensions: 133 X 82 X 32 mm 
 12. Weight: About 0.4kg (host)