Fairgate #40-112 aluminum architects scale ruler. Rugged, professional-quality 12" architect drafting scales are made from anodized aluminum with a solid core. Printed black graduations, non-glare finish, and color-coded furrows. Architects ruler is graduated in 3/32, 3/16, 1/8, 1/4, 1/2, 1, 3/8, 3/4, 1-1/2, and 3 inches to the foot, one edge graduated to 1/16ths. Fairgate triangular architect scale is made in the USA.