The large clearly marked dials on this type of instruments covers a full range of hardness values in Vickers, Brinell, Rockwell A, B, C, and Kp/mm² according to the British, American and German specifications.

The system is entirely mechanical employing the use of special pre-loaded springs which provide a load of about 15kg to the diamond. Maximum penetration of the diamond into the specimen is 0.125mm (.005”).

The simplicity of the tester enables it to be used in almost any direction, (preferably vertically), without affecting accuracy. It can be used ‘on site’. The grips are depressed to the fullest extent by using the palms of the hands and the hardness value can be read off the appropriate scale.