$3.34
High tempered aluminum for maximum durabilityUseful tables and information stamped into square, such as: new lumber scale, decimal equivalent table, metric conversion table, formula for squaring a foundation, 45, 60, 30 angle markings, volume and area formulas, wood screw gauge table, nail sizes (common and finish), quantity per pound and depth scaleDeep, long-wearing graduations for easy readingProtective lacquered coating resists corrosion