High Quality and Durable: The carpenter's ruler is made of high-quality aluminum alloy, with excellent workmanship and high hardness; the surface is coated with matte red to avoid glare, corrosion resistance, durability, not easy to break and deform, and more resistant to falling. The coating is plump and uniform, flat and smooth, which is better than other coating methods. Product Specifications: Weight: 100 grams; Size: 7 inches, metric; Color: red. The triangle ruler can check the angle quickly and easily; the scale is clear and accurate, and it is easy to read. Accurate and Clear Scale: The metric scale on the protractor is laser engraved; the scale is clear and accurate, and it is very easy to read; it is a ruler commonly used by carpenters. The ruler surface is delicate and smooth, and it is comfortable to hold in the hand. Horizontal Base: The triangle ruler metal stop angle has a 90 angle and two 45 angles, a right-angle base, easy to install, and can help you measure the size well; drawing lines is convenient and smooth; there is a conversion table on the back, commonly used rafter conversion, lightweight and durable, more convenient for your work. Wide Application: The metric triangle ruler is mainly used in the woodworking decoration industry, home improvement, etc. It can be used as a protractor, miter gauge, wire saw guide, frame square and ruler, mainly used in woodworking decoration industry, DIY, etc.