Used with standard outside micrometers with spindle .256″DIA to measure pitch diameter of screw threads.
Diameter accuracy: ?20_in. Cylindricity: 39_in.
Cylindricity: 1um. Hardness: HRC60.
Supplied with manufacturer inspection certificate.
Supplied with manufacturer inspection certificate.

3M 19773, Utility Cloth Sheet 314D, 9 in x 11 in P60 X-weight, 7000000360
3M 26130, PPS Series 2.0 Adapter, Type S35, 16 mm Female, 1.5 mm
Thread Stretched, 7100135926
Insize 1120-150P, DIGITAL INSIDE GROOVE CALIPER, .87-6"/22-150mm, IP67 dust/waterproof, 6928640387401
3M 7493, SCOTCH-BRITE SURFACE CONDITIONING DISC PAD HOLDER 7493, 3 IN DIA, 7010309651 