Flexbar - Surface Roughness Standards Set of 30 Specimens

This set has 30 specimens, each are 7/8" x 3/8" comprising:

• 3 Specimens Flat Lapping:  2,4 and 8µ" AA

• 3 Specimens Reaming:  16,32 and 63µ" AA

• 6 Specimens Grinding: 2,4,8,16,32 and 63µ" AA

• 6 Specimens Horizontal Milling: 16,32,63,125,250 and 500µ" AA

• 6 Specimens Vertical Milling: 16,32,63,125,250 and 500µ" AA

• 6 Specimens Turning: 16,32,63,125,250 and 500µ"AA

The Scale conforms to S.A.E. and military specifications for visual and tactile inspection.

Made of solid electroformed nickel a truly international set with markings IN AA (microinches) and Metric IN Ra (micrometers).