1Equipped with a brass screw with a builtin spirit level and a scribe, it can help you to scribe while accurately measuring, and you can perform preliminary inspections without multiple operations. 2With complete accessories, the combined box can quickly and easily draw crosscut lines, slanted tangents, slanted tangents, tearing lines, arrange any angled line and find the center, pin or rod. 3High accuracy, it is a accuracy measuring tool used to check the accuracy of any angle, which is essential for making frames and cabinets, or any woodworking or metalworking projects. 4Improve work efficiency, it can assist in drawing, marking, finding and verifying lines, angles and sawing, versatility and accuracy. 5Wide range of applications, products are widely used in woodworking, construction, mechanical processing and other industries.