The Torquata Triangular Carpenters Square is precisely made from aluminium alloy. This Torquata square features metric graduations on both sides of the 90-degree blades leading edge. It also features marking holes every 2mm that allow you to mark and scribe using a mechanical pencil very accurately. The 45-degree blade features degree graduations every 5 degrees for setting out angles. This Torquata square is perfect for woodworkers, carpenters and roofers for use as a mitre square, line scriber and tri square.