Material and Features: This carpenter's square is made of high-quality aluminum alloy, providing superior hardness, high toughness, wear resistance, oxidation resistance, and durability. It is used for three-dimensional marking, measuring, and transferring angle dimensions, and features a 45° and 90° stop. It also marks dimensions for parallel lines and determines drill sizes using the drill template. It has over 10 functions: the drill template includes an angle ruler, protractor, dovetail template, circular hole, parallel line, vertical line, drill positioning, T-shaped point, and 45°/90° angle ruler. For example, it can be used for custom colors for labels, measuring and transferring angle dimensions, and includes a 45° and 90° angle stop/marking gauge for parallel lines. Drill sizes are also available with the drill guide. Wide Range of Applications: This miter square is suitable for working with three-dimensional pieces, such as beams, square timber, square and round pipes, hollow and solid, aluminum alloy, wood, stainless steel, marble, etc., etc. It is an excellent gift for a carpenter or plumber. Measurement Accuracy: The woodworking measuring ruler itself offers clear, easy-to-read markings and an elegant appearance. You don't need to flip it when measuring. Just slide to mark left and right angles of 45 degrees or 90 degrees.