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 5317-AF109, FLEXIBLE ARM AUTO FOCUS DIGITAL MICROSCOPE (WITH DISPLAY, with magnetic stand), 20X~123X, 6974029777066 