Product material: The imperial 3D measuring ruler is made of aluminum alloy, which has the characteristics of high hardness, light weight, corrosion resistance, and rust resistance. Product Design: measuring rulers with imperial scales and graphics are spliced into a commonly used measuring tool. The body of the ruler is thickened, one ruler is multi-, it can be used for marking lines, measuring 45 and 90 degree angles, easy to disassemble, and convenient to carry. Product Features: The surface of the measuring ruler is anodized, with high surface hardness and wear resistance, which helps to maintain the accuracy of the scale. It can be used as a woodworking measuring tool and square, easy to operate, and capable of measuring, correcting, marking, etc. Common Functions. Applicable Scenarios: Suitable for DIYers, engineers, , and decorators. It is an essential measuring tool for workers in the wood industry. It is suitable for round materials, three-dimensional workpieces, square wood, pipes, etc. If someone around you is keen on DIY, this multi-functional multi-angle imperial measuring ruler will be the best gift. Colour:Black Material:Aluminum alloy Package Contents: 1 * Woodworking Square Protractor 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.