Adjustable Triangles Pro Art

These adjustable triangles are made of 1/8" thick crystal clear acrylic with a white protractor arc and beveled inking edge. The built-in magnifier allows for exact settings, and the thumbscrew knob locks the angle in place. This easy-to-use tool combines the functions of a triangle and protractor. Includes three sets of graduations: degree, slope, and rise. Use as a drafting square when opened up to 90 degrees. Easily find trigonometric functions using included instructions.