High Quality Material: Made of aluminum alloy, high hardness, durable and high precision measurement. Clear, precise and easy to read engraving metric graduation. More Accurate: 3D design, no need to flip the body when measuring, just slide to mark left and right 45 degree or 90 degree angles. 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, circle hole, parallel line, line vertical, drilling positioning, T-shaped dovetail joint, 45 angle, 90 angle, meet your different needs. Finely polished surface, comfortable in the 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. Features: Material: aluminum alloy. Measuring range: 155mm. Dimensions: 215 x 62 x 73 mm. Thickness: 2.6 mm. Graduation: 1mm. Colour: Black. Item Weight: 130 g. Scope of delivery: 1 measuring ruler for woodworking.