Round, 360 degree graduated circular protractor for measuring and marking angles. Measure the angles of reflection, refraction and total internal with ease!

Bevel protractors are used across a wide varieties of applications including Optics, Architectural and Mechanical drawing, and tool makers.

The bevel protractor is used to establish and test angles to very close tolerances.

• Graduations in 1/2″ increments clockwise and counterclockwise allow precise measurement for light and optics demos.
• Made of laminated cardboard
• Classroom quantity of 10