Easy To Use: Push the symmetry bar to the end to be used for taking shape before use, easy to take shape with a light push. With a measuring accuracy of up to 1mm, this tool offers high precise measurements for more accurate sizing and shaping. Secure Locking Mechanism: Equipped with aluminum alloy locking device, the contour gauge ensures a secure grip before measuring and tracing, preventing any deformation and ensuring accuracy. Aluminum core will keep the outline tool working well for years. Adjustable Tightness & Clear Scale: The contour gauge duplicator with clear scales (Inch & CM) on both sides, makes it easier to measure and record numbers. Length: 25cm / 10in. Also, you can easily adjust the tightness with the bonus wrench according to your need. Premium Material: Crafted from premium ABS material, won't scratch the of the object being duplicated, this contour gauge profile tool is sturdy and built to last, ensuring long term durability. Our profile gauge will be a great useful cool gadgets for woodworker.