Mark every cut line and layout accurately with the Irwin 10503544 try and mitre square. This versatile tool combines 90° right angle marking and 45° mitre layout in one durable design. The 300 MM stainless steel blade features etched graduations that resist wear over time, ensuring clear measurements during heavy workshop use. With its solid aluminium stock and edge support, the square aligns securely against the edge of timber and sheet materials. This prevents layout errors and crooked cuts, giving you total confidence in all your carpentry and woodworking tasks.