... 100000 hours. By means of closed - circuit system for control , CPU controls testing force to load; dwell and unload, the sensor feedback ... up a camera device, the tester can take a photograph for testing indentation and materials metallographic composition TypeMHV-5 MHV-10 MHV ... -30 MHV-50 Testing Forces N1.961, 2.942, 4.903, 9.807, 19 ...