Fairgate 24" triangular aluminum architect's scale ruler. Rugged, professional-quality Fairgate architectural drafting scale is made from anodized aluminum with a solid core. Architect drafting ruler has printed black graduations, non-glare finish, and color-coded furrows. 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 #40-124 aluminum architect scales are made in the USA.