... 3.for steel,piastic,foil,coating... manual turret type digital microhardness tester HZ-2504A Equipment discription: This ... system, a reading eyepiece drum. Measurable steel, nonferrous metals, IC thin, thin plastic, foil, coating, surface coating, laminated ... the hardness gradient. Technical parameter:ModelHZ-2504A manual turret type digital microhardness testerHardness scaleHV0.01, HV0.025, HV0.05 ...