ALUMICOLOR Professional-quality scales are made from color anodized solid aluminum. Printed graduations on ultra-smooth, mark-resistant surface. Available in silver, gold, red, blue, black. Supplied in plastic tube.Architect scales have the following graduations 3/32, 3/16,1/8, 1/4,1/2,3/8,3/4,1-1/2, 3" to the foot: one edge graduated to 16ths Engineers scales have the following graduations 10,20,30,40, 50, 60 parts to the inch