The measuring ruler is made of aluminum alloy, which is durable, corrosion-resistant, and rust-proof. Two measuring rulers with scales and graphs splice into one universal measuring tool. The smallest graduation is mm and the graduation is 112 mm (4.4 inches). The body of the ruler is thickened. A ruler can be used for many purposes. Can copy. It can measure 45 degrees and 90 degrees. Easy to disassemble and easy to carry. The surface of the measuring scale is anodized, which has high surface hardness and wear resistance, which helps to maintain the accuracy of the scale. It is easy to operate and has functions commonly used by such as measuring, correcting, and marking. Suitable for DIY, engineers, , decoration workers. It is an essential measuring tool for wood industry workers. Suitable for round materials, three-dimensional workpieces, square wood, pipes, etc. If someone around you is keen on DIY, this multifunctional multi-angle measuring ruler will be the best gift. Colour:Blue Material:Metal Package Contents: 1 * scale measuring ruler Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.