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.

Insize 2364-055, THICHNESS GAGE, 0-.05", 6928640329838
Standard Abrasives 727399, Buff and Blend Cross Buff HS, A/O Medium, 2 in x 3/4 in x 2 Ply x 1/4-20, 7000047137
Standard Abrasives 725000, Buff and Blend Cross Buff GP, SiC VFN, 1-1/2 in x 1/2 in x 2 Ply x 8-32, 7000121819 