ADJUSTABLE AND LOCKABLE The tightness can be adjusted as needed. It is particularly useful for drawing irregular and complex objects. It can be locked and fixed after each adjustment to ensure accuracy. AVAILABLE ON BOTH ENDS Our contour gauge comes with a pulley end and a pointer end. The pulley end is smoother and the pointer end is more precise and easier. The pen holder can be moved up and down to easily change the style end. DURABLE AND PRACTICALThe precise contour gauge is made of high quality metal, sturdy and durable. Small size, easy to carry and store. You can put it in your toolbox and take it wherever you want. ACCURATE SHAPE COPYA simple and effective way to instantly copy any shape. Accurately copy the instant template for curved and irregularly shaped objects. EASY TO USEThe operation of the contour gauge locking mechanism is very simple, it can even be operated with one hand. Fix the pencil in the middle, then press while tracing the line.