The SV series, SV-5/10/30/50 Vickers hardness tester, is mainly used for hardness testing and scientific research of metal materials; It can test almost all metals from very soft materials (such as a few HV) to very hard materials (3000HV), except for samples that cannot measure particularly small and thin coating layers. Adopting automatic closed-loop sensor loading, the automatic loading, holding, and unloading of test force are controlled by MPU; Adopting an LCD display screen, it can directly display the test force, hardness value, test force holding time, and measurement frequency, etc; Just manually read the indentation length, enter the indentation length manually through the control panel, and the MPU will automatically calculate the Vickers hardness value; Thermal printers or automatic turntables can be optionally selected; SV-5/10/30/50 can be optionally equipped with an ivicky 2.0 CMOS camera measurement system.