Alvin Safe-T-Cut cutting ruler straightedges are designed with a unique vertical protective guard that ensures safe, accurate cutting. These hardened aluminum trimming straightedges are ideal for studio, shop, office, or classroom use. Precision ruling edge is graduated in inches (1/16" divisions) and centimeters (1mm divisions) for easier-than-ever trimming jobs. Extra wide base has non-skid rubber backing to prevent slipping and accidental cuts. All Safe-T-Cut safety rulers include a convenient storage hanging ring keeping the straight edge within easy reach. Trim straight, trim fast, trim safely protecting those fingers and hands.