Standard Abrasives 701149, PSA A/O Disc, 1 in x NH, 240, 7010370103 
3M 86802, Cubitron II Stikit Film Disc 775L, 80+, 5 in x NH, Linered w/Tab, Die 500X, 7100048736, 250 per case 
Insize 7382-16, 3-WIRES, .0132″/0.335mm, 6928640361753
$326.56
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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