... the Vickers hardness of micro and super thin parts.Specifications Measuring range: 5-3000HV Test force: 1.961, 2.942, 4 ... , HV0.3, HV0.5, HV1, HV2, HV2.5, HV3, HV5 Measuring accuracy of micrometer: ±0.01μm Test force dwelling time ... pc.Optional accessories RS232 software Knoop penetrator SP-5 Vickers Video measuring apparatus CCD camera and image processing system