Measuring Method:Leeb Hardness Testing Method Hardness Scale:HL,HB ,HRB,HRC,HV,HS Measuring range:HLD(200-960)HRC(19.8-68.5)HRB(13.5-100) HB(30-651)HV(80-976)HS(26.4 Accuracy:+/-6HLD (HLD=800) Type:Portable Hardness Tester Repeatability:less than 6HLD (HLD=800) Power:Two 1.5V AA batteries Resolution:1HL,1HV,1HB,0.1HRB,0.1HRC,0.1HS Display:LED with backlight Communication:USB port(Standard)and Blue tooth(Optional) Show More