High tempered aluminum for maximum durability. Useful 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...
High tempered aluminum for maximum durability. Useful 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...