Gears, man, gears. They are by far my favorite application of the simple lever.
A gear is a toothed wheel that meshes with a similar toothed wheel or rack to create rotational movement. I think anybody who has read anything about machines, and definitely anyone who has read about watches, knows what a gear is.
But what many don’t realize is that a gear is not a simple machine, since it uses two components to create movement.
Ever since the first Maurice Lacroix Roue Carrée with non-circular gears came out in 2010 I have lusted over the odd set of gears visible above the dial, so being able to finally have some time with an example was very cool for me.