Alumicolor's Architect and Engineer 4 Bevel Scales are precision measuring instruments. This 6" Scale has calibrations in 1/32, 1/16, 1/8, 1/4 that read from left to right only. This makes it easier to read than traditional architect scales, which read from left to right and right to left. The beveled edge allows for precise measuring and drawing. All Alumicolor products are made from the highest quality extruded aluminum. The extrusion process creates rulers and scales with smooth edges to exact specifications. The Alumicolor photo anodizing process makes the finish, the color and the calibrations a permanent part of the aluminum. Calibrations are resistant to cleaners or solvents. The anodizing process also means no ticks, raised surfaces or grooves to interfere with the creation of accurate plans, drawings and other precision work. Available in 6 inch and 12 inch sizes.