... , HRB, HRC,HRA,HV,HS; 3, Direct Thermal Hardness tester LK110AFeatures: Based on HL hardness measuring principle, can detect various ... exchange with the PC machine data. Can be equipped with computer software, with transmission measure the results, measuring storage management, ... 5) mm; Print Roll Diameter: 30mmOperating Voltage: 6V Ni-MH battery packCharging Power Supply: 9V/500ma; Charge Time 2.5 ~ ...