Helix Student Architect's Triangular Scale

White, durable, high-impact plastic triangular scale with easy-to-read graduations printed in black. Numbered in 3/32, 1/8, 3/16, 1/4, 3/8, 1/2, 3/4, 1, 1-1/2 and 3 per foot and 16ths to the inch. Fully divided below zero. Triangular design always lays flat. Measures 12" long.