Portable Leeb hardness tester SH-300, capable of storing 500 sets of test data; Capable of collecting statistical data and setting limits; Built in printer and can be connected to a computer to use data processing software; Display time and date, capable of automatic shutdown; Large screen 128 * 64 graphic dot matrix LCD display; Can support multiple hardness testers to produce Rockwell HRB RHC、 Vickers HV, Brinell HB, Shaw HS conversion; Can test all metal materials; Strength and hardness can be converted to each other; The indication error is within ± 5HLD, and the product complies with American standard ASTMA956; 7 different types of impact devices can be configured.