Sheet metal thickness gauge, measuring range (in.) 0.007 to 0.3125, probe depth (in.) 0.80 to 1.60, graduations 0.289 in., number of leaves 0, length (in.) 3, width (in.) 3, thickness (in.) 0.125, measuring range (in./mm) 0 to 36, material steel, finish brushed, features display metal gauge size on one side and decimals on other side