General Tools & Instruments Steel Protractor

6-in adjustable steel protractor, preferred by machinists, craftspeople, and mechanics for setting bevels, measuring and transferring angles, made of ground stainless steel for optimum accuracy, permanently etched graduations from 0 to 190 degree in opposite directions, 3-3/8-in x 2-in square are head, 6-in adjustable protractor arm locks into desired position with knurled thumb nut.