Ateco Multi Wheel Pastry Cutter
While it may look like an intimidating medical device, this pastry cutter is a very handy tool for pastry chefs. In fact, the adjustable wheels are useful to measure, mark, and cut candy bars, pie dough for latice, chocolate decorations, and so much more. It's a favorite of professional pastry chefs and cake decorators, not something your home cook is likely to buy for themselves.