Product Material:This ruler is made of high-quality aluminum alloy material, and the has been anodized, making it harder and wear-resistant, with good insulation performance and long service life. Product Design:This is an -shaped measuring tool with a metric scale. The smallest scale is millimeters and the scale is 100 millimeters. The ruler body is thickened and can be used for multiple purposes. It can mark lines and measure 45 and 90 degree angles. It has beautiful appearance and is easy to carry. Product Features:The ruler is precision machined by CNC and has high-precision scales. It can be used as a woodworking measuring tool and square ruler. It is simple to operate and has common functions for woodworking such as length measurement, 45/90 degree angle measurement, correction, marking the center of a circle and the center line of a circle. Versatile Application: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 multifunctional measuring ruler will be the best gift. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Red Material:Aluminum Alloy Package Contents: 1 x Center Positioning 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.