TRIANGULAR SCALE - Measures 12 inches. For architect, engineer, and mechanical draftsman graduations.
MEASUREMENT MADE EASY - Sharp, easy-to-read graduations resist wear. English and metric.
HOLLOW TRIANGULAR SCALE - All architect scales have the following graduations unless otherwise noted: 3/32, 3/16, 1/8, 1/4, 1/2, 1, 3/8, 3/4, 1 1/2, 3 inches to the foot; one edge to 16ths.
3-SIDED TRIANGLE SCALE RULER - Concave base reduces smearing when drawing.
