Features: 1.Easy to use: one end of the profile marking ruler has a wheel, the other end has a pointed tip, and both ends can be marked . Time-saving and productivity-enhancing gifts for carpenters, architects, and more. 2. Flexible measurement: The contour planning line tool is designed for double-sided use, with sliding ball bearings and retractable pointer. Various irregular shapes can be accurately measured, and the measurement distance can be adjusted freely. 3. Adjust the locking function: the contour gauge tool can adjust the tightness or tightness according to the needs, and draw the contours of irregular and complex objects. Locks in place after every adjustment to ensure accuracy. 4. Able to adapt to various contours: It is easy to copy various shapes, whether it is a curve or a straight line, it can be easily marked. 5. Wide range of applications: ideal for installing tiles, laminates, carpets, checking dimensions, etc. It can be used for various mold installations such as walls, floors, car bodies, woodworking, etc. Specification: Material: Plastic Color: Blue Dimensions: 220 x 35 x 25mm Weight: 150g, Package included: 1 x contour ruler