The Nortools Combination Square is constructed with a durable cast zinc body and a rust-proof stainless steel blade. It's black, precision-etched scales are perfect for marking 90° and 45° marking and transferring measurements. The Combination Square is a true multi-tool. It can be used as a square, depth gauge, scriber, and a level. The Combination Square A combination square is a tool used for multiple purposes in woodworking, stone masonry and metalworking. It is ideal for Woodworking, whether your are a beginner at home or a professional in the workplace. The Combination Square Our 30cm/11.8". combination square features an impact-resistant acrylic level vial built to withstand worksite abuse better than tube-type vials. A mainstay in Nortools’s tool lineup, this 30cm/11.8". workhorse also acts as a depth gauge and has CNC-machined working surfaces for more reliable accuracy.