The square includes a handy 7 inch ruler with clear markings for quick measuring and tracing.^ They can be used as a precise saw guide, protractor and 90° and 45° miter square.^ Ideal for all construction and renovation projects.^ Sturdy die-cast aluminum construction.^ Essential carpenter's tool for framing, roofing, fishing and more. Used for making precise right angles and as a cutting and drawing guide - Has preset measurements. Robust: solid cast aluminum body, clear and precise scale, easy to operate.read. Precise scales: They can be used as precise saw guides, protractors and triangles, squares to measure.90°and 45°. For angle measurement - usedas a saw guide for angle measurement and cutting. Usedfor: making precise right angles and as a cutting and drawing guide - with predefined measuring values. Suitable for: Also suitable for hobbyists, home builders, manufacturers, DIY enthusiasts.