Alumicolor™ triangular Drafting Scales are made of extruded aluminum. Alumicolor's™ photo anodizing process makes the calibrations a part of the aluminum, providing a smooth, tick-free finish and markings which are resistant to cleaners and solvents. Solid Scales have an executive weight and feel.

This engineering scale offers the following graduations: 10, 20, 30, 40, 50, 60 parts per inch.