General description The 180mm Carpenter's Square is a high-precision measuring tool designed for carpenters, roofers, and engineers. This aluminum ruler features a triangular design that allows for accurate measurements and angle determinations from 0 to 90 degrees. With a measuring range of 0-180 mm, it includes clear scales on both the front and back for precise results. The unique craft design includes hollow auxiliary graphic frames for quick line and graph drawing, enhancing efficiency in your projects. Technical specifications Material: High-quality aluminum alloy Measuring range: 0-180 mm Angle measurement: 0 to 90 degrees Surface finish: Matte black paint Durability: Rust-resistant and wear-resistant Usage Serves as a cutting guide for carpentry and construction projects Can be used for framing, protractors, angles, subfloors, and saw guides Ideal for furniture and architectural model making Other information The corners of the triangle are passivated to prevent hand scratches