This indispensable pocket tool performs six separate functions: drill point gauge, bevel protractor, circle center finder, circle divider, tap and drill table. This versatile tool can be used as a protractor for measuring and laying out angles, a square, a center finder to locate shafts or circles, a circle divider for dividing up to nine equal parts, a drill point gauge and a ruler! The ruler and gauge tool features a riveted movable arm, permanently etched graduations and tap drill sizes for added convenience. Made of polished stainless steel construction for long lasting durability. This 4" rule has graduations in 64ths and millimeters