The Premier Black Safety Ruler is a premium ruler option in the sign industry. It offers additional lengths versus Express Sign Products' blue ruler. Made from heavy duty aluminum, it features a full length stainless steel cutting edge insert for maximum performance. A curved finger guard keeps your digits safe from wandering knives. Double full-length rubber inserts provide a non-slip grip and helps the Premier Blue Safety Ruler stay firmly in place. For maximum versatility, the ruler has both US and metric markings. This is the ideal cutting straight edge for signmakers and other graphics professionals.