The Mitutoyo Durotwin hardness tester from Spectrographic has been designed to test the hardness of steels and metals in general, according to Rockwell and Rockwell superficial scales.
The Durotwin hardness tester has been manufactured with a arc-shaped single block body in aluminium forged, which provides perfect sturdiness and stability, it uses the basic principle of loads and levers, of which the loads are selected manually and are applied with the use of a hydraulic damper.