Product Material:This arrow ruler is made of high-quality aluminum alloy material, and the surface has been anodized, making it harder and wear-resistant, with good insulation performance and long service life.Product Design:This is an arrow-shaped measuring tool with a metric scale. The smallest scale is millimeters and the longest 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. The total length of the ruler is 150mm and the width is 90mm. It has beautiful appearance and is easy to carry.Product Features:The arrow 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 or 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 arrow measuring ruler will be the best gift. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.