DescriptionThis item is three-sided ruler, which features delicate and simple design. Made of high-quality material, can be used for a long time. Features a clear scale and modern design, is a practical and useful ruler for students. Our professional square ruler must meet you needs. It is one of the best choices for you.Features- Color:Black.- Material:Aluminum alloy.- Size: About16.50X1.50X1.50cm/6.48X0.59X0.59inch.-Helps you to improve working efficiency and save time with woodworking projects.-It is easy to use and can help you to finish work more effective and more consistent.-Suitable for three dimensional items measuring, parallel line, drill bit diameter, etc.-Designed to facilitate the drafting and measuring of architectural drawing.-Made of high-quality material, can be used for a long time, very practical for your work and life.Packing list1 x ruler