Accuracy: ±6HLD(HL = 800),Resolution: 1HLD, 1HV, 1HB, 0.1HRC, 0.1HRB, 0.1HRA,0.1HS, 1SGMDisplay: Backlit LCD displayImpact direction: full Angle measurementHardness scale: HL/HRC/HRB/HB/HV/HS/SGMMeasuring range: HL170-960, HRC17-70, HRB13-109, HB20-655,HV80-940, HS32-99.5, SGM (rm) 225-2639N/mm²Memory: 300 data can be saved and re-readablePower supply: 1.5V AAA battery *1, With power displayInterface: RS232 interface is used to connect computerStatistics: Average/Max/Min value can be calculated automaticallyOperating environment: -10~+45°CStandard: ASTM A956, DIN 50156, GB/T 17394-1998Dimension (L x W x D): 124 x 67 x 30 mmWeight: 240 gWorking conditions:Minimum weight: 5kg(direct measurement) 2kg(fixed to the weight) 0.05kg(coupled to the weight)Minimum thickness: 5mmMinimum radius: 30mmMinimum roughness(Ra): 2µ