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 53270 7" (180 mm) Dia. Right-Angle Disc Sander
3M 29833, Sanding Screen, 120 Grit, 18 in x NH, 7100160843 
