Protractors Measure Angles: 180° & 360° Protractors are used in Drafting & Math

The Protractor is a tool used in drafting to draw and measure angles other than 30°, 45°, 60°, or 90°. Found in most schools, the protractor is used in math such as geometry an, science or any subject needing to measure or draw angles. Most protractors are made of transparent plastic with graduations printed on them. We offer a complete line of protractors from Alvin, C=Thru and Thru-Angle.

Semi-circle protractors have 180° graduations
Full Circle protractors have 360° in graduations
Tru-Angle Bevel protractors has two swinging arms measuring 360° excellent for wood working and precise measurements