【precision measuring instruments】The measuring range of the triangular carpenter is 0-180mm, and there are scales on the front and back of the triangular ruler. The scales are clear and precise, which can provide you with accurate measurement results. 【Multiple measuring functions】The triangle connector can not only measure the length, but also quickly determine the angle from 0 to 90 degrees. There is also a quick conversion table on the front of the triangular ruler, which can help you save time and improve work efficiency. [Unique DIY design] There are frames with hollow auxiliary graphics in the middle of the carpenter's triangle, you can use them to quickly draw lines and graphics on the wooden board, and the convenient T-shaped fixed side can be fixed on the wooden board, so you can easily make horizontal or diagonal cuts without moving left and right. Improve cutting precision. 【High-quality material】Made of high quality aluminum alloy, high hardness, matte black color,