"Professional-quality scales made from high-impact plastic with white, non-reflecting, matte faces and tapered edges. Machine-engraved graduations and color-coded furrows. Supplied in hard plastic case. 
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, 1½, 3” to the foot; one edge to 16ths."
-Alvin