Our 400 x 600 mm aluminum framing square is stronger than steel and is the most versatile framing square available. It features a 50% thicker frame to provide superior durability over competing steel squares. The 25 to 330 mm scribing notches allow you to easily and accurately measure and rip boards. High-visibility laser-etched markings allow you to easily read measurements on the square. Angle markings allow you to set common pipe angles.