The dual-purpose Protractor and Depth Gage is an ideal choice for taking a variety of precise measurement. The narrow, 6" depth rule slips easily into small holes and slots and features etched graduations in both 32nds and 64ths. In addition the rule doubles as a protractor arm, allowing you to take angle measurements, set bevels and transfer angles. The protractor head is etched with fine black graduations from 0 to 180 degrees in forward and reverse directions.