Fairgate lightweight, durable aluminum drafting triangles feature a matte-satin finish that resists stains and tarnishing. These quality drawing triangles feature 1/16" graduations on the 90 degree angle. May also be used as a template for circles from 1/16" to 1-3/8". Perfect triangle for the home, office, studio, or shop. Available in several popular sizes. 45/90 and 30/60 Fairgate aluminum triangles are made in the USA.