Contour Gauge: --- Accurate shape measurement, can reproduce different shapes, Contour gauge is very suitable for laying tiles, ceramics and tool molds, laminates and cutting mat. Adjustable and Lockable Function: --- The intensity of the contour gauge can be adjusted according to your needs. The contour gauge is especially suitable for drawing the contours of irregular and complex objects. It can be locked and fixed after each adjustment to ensure the accuracy of the measurement. Carry Around: --- The contour gauge is only 3.5 * 2.7 * 23.3 cm. It is easy to carry and store, and it is more convenient to use. Available at Both Ends: --- The contour gauge has pointers and pulleys at both ends, and both ends can be measured. The scroll wheel makes drawing smoother, and the drawing at the end of the pointer is accurate and easy. High Quality Material: --- The contour gauge duplicator is made of high quality metal + ABS, which is durable and easy to carry and store. It is your best helper when measuring. Adjustable and Lockable Function The intensity of the contour gauge can be adjusted according to your needs. The contour gauge is especially suitable for drawing the contours of irregular and complex objects. Easy to Carry The contour gauge is easy to carry and store, and provides more convenience for your application. Both Ends Can Be Used Both ends of the contour gauge can be used for measurement. The scroll wheel makes drawing smoother, and the drawing at the end of the pointer is accurate and easy. Product Specifications Material: Metal + ABS Size: about 3.5 * 2.7 * 23.3cm Measuring range: 233mm Instruction: 1. Turn the center nut to adjust the tightness of the clamp. 2. Insert the marker into the clamp. 3. Turn the nut to fix the marker. 4. Measure with the pulley/pointer.