this machine Can measurese the steel, have the color metals, the thin slice of IC, thin ... application:Applicable to quenched steel, surface-quenched steel, alloy steel, cast iron, nonferrous metals, all kinds of quenched and annealed steel, hardened steel sheet, also suitable ... Indenter 1,Diameter 1.5875,2.5,5mm Hard Alloy Steel Ball Indenter each 1 piece,Measuring Microscope 1 set,Inside ...