The scratch hardness tester from Eridshen is a unit that is powered by a 5 rpm drive. This is ideally used for applications that are concerned with clamping test panels sizing up to 100 x 100 x 22 mm with a 140 mm diameter. The package is supplied with a 2 wights that are within the 1 to 10 N range, a magnifying glass, and a carrying case.