Surface Roughness Standard

Economy Set of 30 specimens, 7/8″ x 3/8″ electro formed, solid nickel. Ideal for use by draftsmen, engineers, machinists, etc. Each type of surface finish is truly and consistently reproduced, offering a realistic idea of the feel, appearance and texture of the machined components. Appearance and texture of the machined components. Instructions and graph correlating inch and metric surface values plus ISO “N” scale. included in set

Specification:

3 pcs. Flat Lapping – 2, 4 and 8 u”

3 pcs. Reaming – 16, 32, and 63 u”

6 pcs. Grinding – 2, 4, 8, 16, 32 and 63 u”

6 pcs. Horizontal Milling – 16, 32, 63, 125, 250 & 500 u”

6 pcs. Vertical Milling – 16, 32, 63, 125, 250 & 500 u”

6 pcs. Turning Milling – 16, 32, 63, 125, 250 & 500 u”