This adjustable triangle merges the functions of both a triangle and a protractor, making it a versatile addition to any drafting tool collection. It features beveled edges for precise lines, and is enhanced by die engraved graduations for high visibility. It is made of clear acrylic for durable, long term use. Beveled edges . Die-engraved graduations . White protractor arc . Double row of graduations on protractor arc . Angles from 0 to 90 . Built-in magnifier . Made of heavy duty 0.125 in. thick Acrylic plastic