Glastonbury 112E Micrometer Masters

Glastonbury 112 mic masters are a very fast way to calibrate or just ensure your micrometers are always giving you the right results. The step increments are 1″ apart enabling you to verify any micrometer at max and minimum range.? Each unit is case hardened, stabilized and ground. All diameters are chrome plated for longevity and corrosion resistance and ground to a tolerance of ?.0001 or ? .0025mm.