The Stanley hand tools aluminum carpenter's square features deep, long-wearing graduations for easy reading and a protective lacquered coating resists corrosion. Anodized aluminum for maximum durability, light weight, and corrosion resistanceDurable, embossed graduations and figures for easy readingProvides helpful reference conversion tables such as new lumber scale, decimal equivalent table, metric conversion table, formula for squaring a foundation, 45 degree, 60 degree and 30 degree angle markings, volume and area formulasProtective lacquered coating resists corrosion1/8 in. graduation-back and graduation-faceBuffed finish4 in. x 2 in. body length16 in. x 1-1/2 in. tongue length