High PrecisionThis 3D multi-angle carpenter's square has clear and easy-to-read markings, allowing for quick and accurate measurements. The smallest unit of measurement is one millimeter, and the longest scale reaches up to 112 millimeters. Its user-friendly design can improve your work efficiency, allowing you to complete measuring tasks more quickly. 11 Types of Drilling Jig HolesThis quick carpenter's square is equipped with 11 drilling holes of different diameters, ranging from 3 mm to 11 mm, compatible with various standard screw sizes. This feature allows you to easily find the corresponding hole and quickly complete drilling tasks. Detachable DesignEach metric square set includes 1 protractor, 2 screws and 1 hex wrench. The detachable design allows for easy assembly and disassembly to suit various applications. By tightening the screws, it transforms into a 3D measuring tool. When not needed, use the hex wrench to remove the screws, providing a square ruler and carpenter's square for versatile measuring tasks. High-Quality Aluminum MaterialThis 3D woodworking square is made of aluminum alloy with an oxidized surface, making it resistant to rust and corrosion. Its sturdy structure prevents deformation, ensuring long-term accuracy. In addition, it is lightweight, weighing only 150g, making it easy to carry without any hassle. Wide UseThis 3D multi-angle carpenter's square is more than a traditional ruler; it can measure angles, mark cutting lines, and determine slopes. An essential part of any toolbox or workshop, it measures 3D objects such as wood, metal pipes, and marble, making it ideal for engineers and carpenters.