General description The 180mm (7 inch) Aluminum Triangle Square Ruler is a multifunctional carpenter measuring tool designed for precision and convenience. It features a clear scale and a conversion table on the back for quick and easy reading of measurements. This triangular ruler combines the functionalities of a frame angle, triangle, bevel angle, and protractor angle, making it an essential tool for various applications. Technical specifications Length: 180mm (7 inches) Protractor scale: 0 to 90° Usage Ideal for woodworking projects Useful for hobbyists, home builders, manufacturers, and artists Other information Made with baking paint technology for rustproofing and wear resistance Thicker body for durability and stability Sharpened corner design to prevent scratches and bumps