Glastonbury Gage Micrometer Master, 0″ to 1″ (0-25mm)

Micrometer masters by Glastonbury Southern Gage are used to calibrate and set micrometers. The master is superior to gage block calibration because they do require block stacks and therefore it is much faster to inspect the linear range of the tool. In addition they indicate wear on the micrometer anvil because it replicates how the micrometer is used.

0-1″ (0-25mm) diameter is Stainless Steel to reduce wear and prevent rust. Hardened, stabilized, ground and lapped to +/-.0001. Comes complete with storage case.