Alumicolor Center Finding Ruler 18 inch

This Alumicolor Straightedge is really two rulers in one. The front side is calibrated in inches and millimeters while the back side has center finding calibrations in inches. This straightedge features ultra smooth edges and photo anodized calibrations that are resistant to cleaners and will not rub off. Made of sturdy, rigid aluminum, 1/16" thick by 1-1/8" wide, Multi-purpose.