Professional quality Alvin 240BP black architects scale ruler is made from high-impact plastic with black, non-reflecting dull-matte faces, and tapered edges. machine-engraved, white graduations, and color-coded furrows. Standard architectural graduations: 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. Includes plastic storage case. Alvin 240BP 12" architectural drafting scale rulers are made in Germany.