Locking Mechanism: The next-generation contour gauge features a locking part to ensure the contoured area remains intact until traced. Versatile Use: The contour gauge is designed for measuring pipes, circular frames, ducts, and many other objects, perfect for fitting tiles, laminate, carpet, dimension checking, molding, etc. Useful tool for car bodywork, carpentry, and all Improved contour gauge 10-inch contour gauge with finer pins accurately measures profiles. Easy to Use: The contour gauge measures 25 cm. Simply press the teeth against the object to match the contour and follow the shape you need. This gauge increases your productivity and saves valuable time for marking the exact cut. High Quality and Durable: The contour gauge is made of high-quality ABS plastic, high strength, rust-proof and durable, rust-proof plastic conforms to the shape and retains the pattern.