Compact plastic case???suitable for use under poor working conditions. Test at any angle, even upside down. Wide measuring range. It can measure the hardness of all metallic materials. Direct display of hardness scales HRB, HRC, HV, HB, HS, HL. Large screen showing all functions and parameters. With EL background light. Large capacity memory could store 100 groups information. Datapro Software to connect with PC via RS232 port. Micro printer support. Software calibration function.