... hardness testing instrument for research or measuring purposes. Main technical parametersVickers scales:HV0.5,HV1,HV2,HV3,HV5,HV10Display:conversion to Rockwell ... ,brinellDisplay5-digit Hardness value, 4-digit Diagonal length(D1,D2),dwell time ... :220V,60/50HzWeight(kg):50 HVD-10A1/D1 Manual/Automatic Vickers hardness tester