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.

Dynabrade 55501 .1hp Pencil Grinder, Twin Turbine, 100,000 RPM, Nickel-Plated Aluminum Housing, 3mm Collet
3M 22393, Roloc Disc 361F, 36 YF-weight, TR, 3 in, Die R300V, 7000045093
Standard Abrasives 42620, A/O Flap Wheel 621405, 1 in x 1 in x 1/4-20 in 60, 7010294994, 10 per case
Insize 3101-125E, DIGITAL OUTSIDE MICROMETER, IP65, 4-5"/100-125mm, 6928640326820
3M 24049, Wetordry Cloth Disc 281W, P1000 YF-weight, 8 in x NH, Die 800JM, 7000045052
Standard Abrasives 711599, A/O Straight Cartridge Roll, 1/4 in x 1 in x 1/8 in 80, 7100080016
Standard Abrasives 42660, A/O Flap Wheel 625108, 3 in x 1/2 in x 1/4-20 in 120, 7010369120, 10 per case
3M 11411, Roloc Disc 361F, 50 YF-weight, TR, 1 in, Die R100N, 7000045095
3M 99632, Scotch-Weld Pressure Fit/High Temperature Retaining Compound RT48, Green, 50 mL Bottle, 7010367443, 10/case
3M 33439, Cubitron II File Belt, 33439, 60+, 10 mm x 330 mm (3/8 in x 13 in), 7100033194, 10 belts per carton, 5 cartons per case 