3M 05207, Hookit Sanding Block D/F, 70MM x 127MM, 7100007814 
ACS Diamond Cloth Belt, CX1250 3/8" X 24" 75U 
Insize 7382-12, 3-WIRES, .0077″/0.195mm, 6928640361715
$321.46
Used with standard outside micrometers with spindle .25″DIA to measure pitch diameter of screw threads.
Diameter accuracy: ?20_in. Cylindricity: 39_in.
Hardness: HRC60.
Supplied with manufacturer inspection certificate.
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