The Fit Test Gauge is a verification tool made up of two flat parts with tabs and jaws, designed to check the precision of fits, tolerances and clearances between components. The two parts slot into each other to visually show the tightness of a press fit or a sliding fit, helping to adjust machining parameters and to verify a printer's calibration. Useful in the workshop, in model making and in any work requiring precise fits, with a size of 3.1 cm