【Multifunctional Folding Triangle Ruler】: This carpenter's square folding angle ruler features a 6-inch foldable extension arm, meeting both 6-inch and 12-inch layout needs; the measuring distance increases when opened and storage space decreases when folded, making it easy to carry. It offers dual measurement units (metric and imperial) for convenient use. 【Adjustable Carpentry Tool】: The triangle can be bent, and the angle adjusted; use the adjustable positioning tool to freely select the angle. After adjusting to the desired angle, tighten the positioning nut and press the central pull rod to achieve precise positioning. A variety of measurement functions suit different scenarios. 【High-Quality Material Carpentry Tool】: Made of high-quality aluminum alloy with a matte black finish to prevent glare, offering corrosion resistance and excellent oxidation resistance, ensuring it's not easily broken. 【Stainless Steel Needle Carpentry Tool】: The internal magnetic ruler stays intact, is not easily detached, and boasts a long lifespan. A hidden stainless steel scribe with a line at the end is screwed and fixed to the ruler body, preventing detachment and ensuring easy portability. 【Widely Used Angle Ruler】: This multifunctional folding triangle ruler is ideal for woodworking. It can draw 45°-90° angles, balance lines, vertical lines, and equidistant midpoints. The adjustable positioning button corresponds to all intersections of the drawn line and edge, ensuring equidistance. Use it for tracing slopes, beveling the ends of roof rafters, and opening gutters.