Extra Wide Profile Gauge Our length 10"&5" contour duplications gauge also wide to 5.1 inch, depth contour gauge will be useful for more deep shapes. Easy to use, just press up against whatever you're trying to trace. Update Locking Mechanism 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. We upgraded the function of the product. New design lock is more labor-saving and not easy to break. High Precision Profile Copy Gauge This shaping gauge has high precision and the single needle down to 0.06 in, This measuring tool makes cutting and measuring become easier.