Manufacturer's Part Number: #45-300
High-quality aluminum for maximum durability. Protective lacquered coating resists corrosion. Durable, black, embossed graduations and figures for easy reading. Provides helpful reference conversion tables such as new lumber scale, decimal equivalent table, metric conversion table, formula for squaring a foundation, 45, 60 and 30 degree angle markings, volume and area formulas, wood screw gauge table, nail sizes (common and finish), quantity per pound and depth scale.