what is a roofing square 2

https://future-wiki.win/index.php/How_to_Use_a_Roof_Square_Footage_Calculator_for_Accurate_Material_Estimates

A roofing square is a measuring tool shaped like a large right triangle, typically made of metal. It helps roofers and carpenters lay out rafters, determine angles, and mark cuts for rafters, hips, valleys, and fascia boards. The square has a body and a tongue with detailed markings for pitch and rise over run, making it essential for precise roof framing. Without it, cutting rafters would rely on guesswork rather than exact calculations.