Sturdy Material: 3D square miter ruler made of high quality aluminum alloy, high hardness, high toughness, wear-resistant, rust-proof and durable. Compared with other plastic rulers, it is more durable. More than 10 multiple functions: test square is square, protractor, dovetail template, circle hole, parallel line, vertical line, drill positioning, T-shaped plotter, 45/90 angle ruler . for example, dimension colors for labels. Measurement and transfer of angular dimensions. 45 degree and 90 degree angle stop/parallel line marking gauge. Drill sizes with the drill sleeve. Wide application: the woodworking ruler is suitable for processing three-dimensional workpieces, such as beams, wood, square and tubular tubes, hollow and solid tubes, aluminum alloy, wood, steel stainless steel, marble, etc. This is a great gift for a carpenter or plumber. Measurement Accuracy: Carpenter's angle is clear, easy to read and elegant in appearance. You don't need to turn the body when measuring. Simply swipe to mark 45 or 90 degree angles left and right. Functions: for three-dimensional marking - measurement and transfer of angle dimensions - stop at 45 and 90 - marking indicator for parallel lines - determination of the size of the hole with the drilling template. Compared to other rulers, it is more accurate.