【High Quality & Durable】The contour gauge is made from tough and durable ABS plastic, well built, lightweight, sturdy and durable, rust-proof and won’t scratch the surfaces during use. It is smooth to push and no lack of pins to influence precision. 【Adjustable and Locking Feature】Once object has been contoured, lock contour gauge teeth in place for perfect traces every time. The locking mechanism really makes sure you don’t loose your pattern to. After using the contour ruler for a period of time, you can easily adjust the tightness. 【Easy to Use】Our contour gauge measures 5 inch&10inch. It can duplicate any shape instantly. Press the teeth against the object to match the contour and then trace the shape you need. You will get a good shape that is clear, easy to measure or cut. 【Wide Application】This contour gauge fits for measuring many irregular items, winding pipes, auto metal sheet, circular frames, pipes, tile, laminate, wood planking, ducts, flooring, carpet, molding, etc.