~ Great tool for easy and accurate measurements of the true sizes of holes and slots. ~ Self-centering, double action allows you to check inside measurements quickly. ~ Rigid handles with smooth movement. ~ Satin chrome finish. ~ Constant spring tension for a uniform feel. ~ Contact point ends are hardened tool steel that has been precision ground on a radius of the smallest hole the gage will enter. ~ Measuring range is 5/16-1/2", 1/2-3/4", 3/4-1-1/4", 1 1/4-2 1/8", 2 1/8-3 1/2",3 1/2-6" and 8-12.7mm, 12.7-19mm, 19-32mm, 32-54mm , 54-90mm, 90-52.4mm. ~ One set meaures up to 4"/100mm and the other measures up to 12"/300mm. ~ Supplied in fitted cases.
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