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 01322, Stikit Gold Film Disc Roll, 6 in, P500 grade, 7010327903, 75 discs per roll
Dynabrade 13017 Arbor Assembly 1/2"-20 Female Thread - 5/8"-11 Male Thread
3M 45094, Roloc Disc Pad TR, Soft 2 in 1/4-20 Internal, 7000045278
Dynabrade 78316 2" Dia. x 1" W x 1/4" Shank, Medium, NWN DynaBrite Wheel, 10/pack
Insize 6301, MICROMETER STAND, 6928640307300
3M 27551, EMI Copper Foil Shielding Tape 1181, 1/2 in x 18 yd (12.70 mm x 16.5m), 7000132182 