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 07958, Sanding Screen, 80 Grit, 7-7/8 in x 3/16 in, 7100160277
Insize 7341-4S, PIN GAGE HANDLE (with 1pc handle and 6 pairs of collecting bushes),.180-.228", 6928640360732
Dynabrade 40320 Dynafile II Abrasive Belt Tool
3M 14593, Scotch-Brite Cut and Polish Disc, 3" x 1-1/4" x 1/4" A Medium, D5, 7000045941, Box of 10
3M 26102, PPS Series 2.0 Adapter, Type S16, 3/8 Female, 19 Thread BSP, 7100135934
3M 22396, Roloc Disc 361F, 36 YF-weight, TR, 1-1/2 in, Die R150S, 7000045091
3M 84282, Cloth Belt 777F, 80 YF-weight, 1/8 in x 18 in, Fabri-lok, Single-flex, 7100083001, 200 per case 