Surface Roughness Specimen Set, Material Nickel, For Machining Method Cylindrical Turning, Number of Pieces 8, Roughness – Ra 16, 32, 63, 125, 250, 500, 1000, 2000 uin, Roughness – Rz 68, 128, 244, 488, 950, 1900, 3800, 7600 uin, Specimen Dimensions 128 mm x 52 mm
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