Chamfer Gage These Chamfer Gages provide instant measuring of chamfers and tapered hole diameters. Features include... 1-2" Capacity 90° - 127° Angle Range Direct Diameter Reading to 0.001" These gages offer hardened and precision ground 3-blade steel plungers that assure high accuracy and repeatability. The gages can be "zeroed out" by pressing the base of the gage against a flat surface and set it to the "Set To" number stamped on the back of the gage.