SQUARE LAYOUT TOOL: This triangle carpenter square is CNC machined from solid aluminium for durability and precise reading. Because it can withstand any workplace damage; this laser-etched square comes with Johnson's best-in-class limited lifetime warranty. EZ-READ FINISH: The anti-glare EZ-Read anodizing method used for finishing this construction square allows the EZ Read laser etched graduations and numbers to stand out and makes them highly visible. APPLICATION RANGE: The builders and contractor appreciate the versatility of this measuring tool. This square is great for finishing construction; establishing saw blade angles; and more in small spaces. CONTINUOUS SCRIBING NOTCHES: The rafter square has continuous scribing notches from 2 cm to 12 cm; as well as convenient markings that measure 2×4 board dimensions of 1-1/2"; 3" and 3-1/2". PRODUCT DESCRIPTION: This black Johnny Square measures 2.86 × 25.4 × 13.34 cm and weighs 217.72 grams. The square has a protective anodized coating that is low-glare.