Nicunom 3 Pack Architectural Scale Ruler, 12″ Triangular Architect Blue
Imperial scale: 1-1/2, 1, 3/4, 3/8, 3/16, 3/32, 1/2, 1/4, 1/8, 3, 16. Classic architect triple-sided scale is convenient and useful for professional use. With durable laser cut imperial prints for accuracy.