The Tolsen 35039 is an industrial angle square designed for precise line marking and verifying right angles. It features a 300 mm blade made from 2Cr13 stainless steel, which ensures the tool remains corrosion resistant during heavy use. This blade is paired with a lightweight aluminium alloy base, keeping the overall tool easy to handle without sacrificing durability. Measuring 36 mm in width and 1.0 mm in thickness, the square includes engraved scales in both millimeters and inches along its edges for quick and accurate measurements. This combination of materials and markings makes it a practical choice for professionals or hobbyists who need a reliable, slim tool for layout work in a workshop.