The Empire True Blue Laser Etched 7 in. Rafter Square features permanent laser markings for superior readability in any light condition. SCRIBE-GUIDE precision scribe notches allow users to easily mark parallel lines on lumber. Hi-visibility laser etched markings won't fade after heavy use on multiple job sites. The rafter layout square is made from a durable anodized aluminum that is more durable than diecast and will not rust or corrode after exposure to the harsh job site elements. The Empire rafter square features conversion tables for common applications. The square features an increased heel width that is up to 15% wider than leading competitors giving users increased stability on all job site material. The Empire 16 in. x 24 in. TRUE BLUE Laser Etched Framing Square features permanent high-visibility laser markings that won't wear after heavy use on the job site. The Framing Square features ARC-SCRIBE which gives users the best solution for marking radii on job site materials. The durable anodized lightweight aluminum Framing Square will not rust or corrode and features laser etched graduations at 1/8 in., 1/10 in., 1/12 in., and 1/16 in. for superior readability in any light condition.