EBay Imperial Circle Center Positioning,45/90 Degree Positioning Ruler, Right7212 Product Material:This ruler is made of high-quality aluminum alloy material, and the has been anodized, making it harder and wear-, with good insulation performance and long service life. Product Features:The ruler is machined by CNC and has high- 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, carpenters, 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 be the best gift. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Material: Aluminum alloy colour: black Package Contents: 1 x line drawing ruler