A pizza cutter is a utensil that is used to cut pizzas. There are two main types of pizza cutters. The most common uses a wheel that rotates in a circle while a person moves the cutter in a direction that they would like to cut the pizza. The other type is a large curved knife called a mezzaluna, which is rocked back and forth to cut the pizza. These two types of pizza cutters come in many different sizes. Many people might use the wheel pizza cutter for other things, including craft work. Some types of mezzalunas (particularly the double-bladed type) are often used to mince herbs or chop vegetables. ... A Pizza Margherita made in Naples (Napoli), Italy. ...
Obviously, we need to add the pizza wheel, with a long, elegant handle and a small but razor sharp wheel, to elegant place settings everywhere.
On one hand, I expect my pizza to be served already sliced up, so such a thing should not be necessary; but then the same logic should apply to stake knives.
The pizza itself is already sliced and is sitting properly on your plate as it is served.