General description The OX Pro Aluminium Rafter Squares, available in 12-Inch (300mm) and 7-Inch (180mm) sizes, are the ultimate tools for precision carpentry and layout work. Designed with the trade professional in mind, these squares feature scribe notches for precise 5mm markings and laser-etched measurements for enhanced accuracy. Crafted from extra-thick anodised aluminium, they offer durability and a wide base for stability, making them ideal for rapid precision marking at 45° and 90° angles, as well as for scribing notches. Technical specifications Sizes: 12-Inch (300mm) and 7-Inch (180mm) Material: Extra-thick anodised extruded aluminium Markings: Laser-etched for enhanced readability Marking increments: 5mm Usage Ideal for marking at 45° and 90° angles Suitable for rafter layout and scribing notches Provides accurate measurements with metric markings and conversion tables for rise and run applications