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. Hollow Scales are lightweight for easy portability.

This metric scale offers the following graduations: 1:100, 1:200, 1:250, 1:300, 1:400, 1:500.