... type Surface roughness test instrumentEquipment discription:Surface roughness test instrument used for measuring room and the production site of ... work carried out high-precision surface roughness measurement, the instrument can part plane, axial surface roughness test bus. This ... HZ-3503D new type Surface roughness test instrumentAssessment parameters: Ra.Rt.Ry.Rmax, Rz (DIN), Rzu (ISO), R3z, Rp, S ...