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.

Insize 4180-2000, MAGNALIUM STRAIGHT EDGE, length 80", 6928640320576
Dynabrade 15420 Dynafile III Abrasive Belt Tool
Dynabrade 95544 Gear Grease, 2.5oz. Tube 