Protractors C19 Steel 0-180º This steel protractor is a highly useful and accurate tool for setting bevels, transferring angles, small squaring tasks, checking cutter clearances within certain limits, and the direct reading of angles and supplementary angles. Fea tures • The back of the tool is flat for ease of use • The blade can be locked firmly at any angle by the lock nut • Double graduations from 0-180º in opposite directions permitting the direct reading of angles and supplementary angles • 6" satin chrome blade for ease of reading and resistance to rust • Round head C183 Steel 0-180º The same features as the C19, except that is has a rectangular head, thus providing four convenient working edges. C182 Steel 0-180º Weighs 3 ounces and features a satin chrome finish.Furnished with one needle point and one cone point. Fea tures • Will allow the drawing of any number of radial lines at any angle through a common center • The fulcrum point can be drawn back into the hub and frictionally held in a safe position • Satin chrome finish for ease of reading and resistance to rust C19 C182 C183 Cat. No. EDP Blade Length Range C19 50127 6" 0-180º Cat. No. EDP Blade Length Range C182 64361 6" 0-180º Cat. No. EDP Blade Length Range C183 50672 6" 0-180º 116 P rotractors