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 27704, Cubitron II Roloc Durable Edge Disc 984F, 36+, YF-weight, TSM, Maroon, 1-1/2 in, Die RS150SM, 7000045168, 200 per case
3M 44495, Diamond Grade DG3 Reflective Digital Sheeting 4091UDS,Yellow, 48 in x 50 yd, 1 Roll/Case, 7100273873 