The Faithfull Quick Roofing Square, also known as a layout or angle square, is designed to provide carpenters with a quick and accurate way to mark out for many building projects, and is widely used when constructing roof rafters. Manufactured from aluminium, featuring imperial graduations marked with degree measurements to help simplify material layout and timber cutting. Quick, accurate and able to calculate hips, valleys and angles on roofs - making it a truly flexible square.