Features: 1.Based on Leeb hardness measuring principle, can detect a variety of metal materials . 2.A host can be equipped with 7 different impact devices , automatic identification of impact device type , replacement without recalibration . 3. Support " forged steel (Steel)" material , when using the D / DC type impact to test " forged " sample , reading directly HB values, without manual look-up table . 4.The bounds of the hardness value can be pre-set,automatically alarm when out of range,hardness value can be pre-set upper and lower limits , out of range alarm , meeting the needs of batch testing for users. Large-screen 128 × 64 dot matrix LCD display, information-rich and intuitive. 6. Full Chinese display , menu-driven operation, simple and convenient. 7. EL backlit display,available in the dark environment. 8. Storing up to 500 groups ( impact times 32 ~ 1 ) hardness measurements , each single measurement data including value , average, measurement date , impact direction, frequency , materials, hardness, and other information . 9. Integration of thermal printers and instrument, working quietly , fast printing, printing test report on the spot. With functions of software calibration. 10.Built-in NiMH rechargeable batteries and charge control circuit ; no less than 150 hours of continuous working time ; with functions of automatic sleep and automatic shutdown and other power saving functions. 11.Remaining charge indicator on the LCD , real-time display the remaining power ; with charging instructions , operator can know the charging level at any time. 12. USB interface , quickly and easily exchanging data with a PC . Can be equipped with computer software,with functions of transmission measurement, measured value storage management, statistical analysis of the measured values , the measured value printed reports , batch setting instrument parameters and other rich features to meet the higher requirements for quality assurance and management.