High Quality Material: Made of aluminum alloy, high hardness, durable and high precision measurement. Clear, precise and easy to read engraving metric graduation. More precise: 3D design, no need to turn the body over when measuring, just slide to mark left and right 45 degree angles or 90 degrees. The measurement accuracy is 1 mm. It can help you improve work efficiency and save time with woodworking projects. Multi-function angle ruler: includes square, protractor, dovetail template, circular hole, parallel line, vertical line, drilling positioning, T-shaped dovetail joint, 45 angle, 90 angle, meet your different needs. Finely polished surface, comfortable in hand and easy to use. Helps you improve work efficiency and save time with woodworking projects. Wide Application: These woodworking tools are suitable for three-dimensional items: square and tubular, hollow and solid, aluminum alloy, wood, stainless steel, marble. The 3D angle ruler is widely suitable for furniture making, DIY, woodworking, l professional use and so on. Suitable for round materials, three-dimensional parts, square wood, pipes, etc. Features: 1. Can be used as a marking gauge for parallel lines, measuring 45 and 90. 2. Made of aluminum alloy, wear resistant, anti-oxidation, durable and high precision measurement in use. Clear, precise and easy to read metric engraving scale. 3. Can be used for positioning T-line, square, protractor, dovetail, circular hole, parallel line and round hole. 4. Aluminum alloy 3D miter ruler suitable for processing three-dimensional workpieces, such as beams, square timber, pipes, etc. Specifications: Material: Aluminum alloy. Measuring range: 155mm. Dimensions: 215 x 62 x 73mm. Thickness: 2.6mm. Graduation: 1mm. Black color. Item weight: 130g. Box contents: 1 measuring ruler for woodworking.