A folding rule, also known as a carpenter's rule or a zigzag rule, is a measuring tool with multiple hinged sections that can be folded for compact storage. It typically consists of several segments, each marked with measurements, allowing for precise measurements and easy transportation. The folding rule is commonly used in various fields, including construction, woodworking, and engineering, to accurately measure lengths, widths, and angles. Its foldable design makes it convenient for carrying in a pocket or toolbox, while its sturdy construction ensures durability and accuracy in measurement tasks.