The Savage Builders Square is essential in the construction of wood framed buildings. You can trust the Savage Builders Square with precision laser etching makes this square the most accurate in the industry. A simple tool with innovative design that will last you a lifetime. Features: * Perfect for determining the flatness of a surface plane or creating a true 90-degree angle in cutting to size * Used where walls meet, calculating rafter angles, creating stairways, calculating octagons, and can be used as a diagonal square * Lightweight and durable * Anodized aerospace aluminum * Precision laser etching * Reverse reading scale What"s In The Box: * Swanson SVL123 12-Inch x 24-Inch Builders Square