Swansons "The Savage" T-Bevel Square is the ultimate in accuracy &durability. The T-bevel which, is a sliding bevel square or adjustable bevel square, is an indispensable tool for laying out, copying, marking, &measuring any angle. This tool is used by finish carpenters &is an essential for general contractors. The size of this tool makes it perfect for any tradesman on the go. DIY enthusiasts that are learning carpentry should start the learning process with a T-Bevel as it is easy to handle. With one of these on the job you can count on the greatest level of accuracy, speed, &the durability that you are looking for from a tool that will last you a lifetime.