Rafter Square - 170mm Timco 863554 3 in 1 – combination square, try square and protractor Maximum accuracy Mitre square and framing square Durable etched scales for ease of visibility Calculate angles of roof frames quickly and easily Built-in notches for scribing Robust aluminium frame The Rafter Square is a lightweight and precise triangular square designed for versatility and accuracy in various applications. This multi-purpose tool effectively combines the functionalities of a tri square, combination square, and framing square, making it an essential addition to any toolkit. With a protractor scale ranging from 0° to 90°, it serves as an efficient saw guide, featuring embedded degree markings for enhanced legibility. The durable etched scales ensure visibility, while the robust aluminium frame guarantees longevity and reliability. Ideal for professionals and DIY enthusiasts alike, the Rafter Square simplifies the process of calculating angles for roof frames and includes built-in notches for scribing, ensuring maximum efficiency in your projects.