Alvin Adjustable Triangles

This Alvin Tru-Angle Adjustable Triangle is made of heavy, clear acrylic plastic and provides the features of a 45’/90’ adjustable triangle plus those of a protractor.

• Angles from 0’ to 90’ can be drawn from the baseline with ½’ accuracy

• Die-engraved graduations for high visibility

• Aluminum thumbscrew securely holds selected angle