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 X62HS 6" Dia. Non-Vacuum Dynorbital Extreme Random Orbital Sander, Hook Pad W/ Speed Regulator
Dynabrade 82442 6" Dia. x 60 Grit A/O Hook Non-Vacuum Film-Backed DynaCut Disc, 100/Box 
