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.

Standard Abrasives 730102, Ceramic Full Taper Cartridge Roll, 1/2 in x 1-1/2 in x 1/8 in 120, 7100102951
3M 06839, Booth Coating, 1 Galllon, 7000028421
3M 97419, Aluminum Foil Tape 3380, Silver, 48 mm x 45 m, 3.25 mil, 7000049613 
