Designed with a unique verticle protective guard that ensures safe accurate cutting.  These hardened aluminum straightedges are ideal for studio, shop or classroom use.  Precision ruling edge is graduated in inches (divided 1/16") and centimeters (divided 1mm) for easier that ever trimming jobs.  Extra wide 3 1/2" base has non-skid rubber backing to prevent slipping an accidental cuts.  Convenient hanging ring keeps the Safe-T-Cut within easy reach.