You can learn a lot about how a watch works by getting a few old inexpensive pocket watch movements off eBay and playing with them. They’re bigger movements th

You can learn a lot about how a watch works by getting a few old inexpensive pocket watch movements off eBay and playing with them. They’re bigger movements than a wrist watch, and thus easier to work with, but most of the concepts are the same. I did just this a couple years ago and got hooked on horology, although I actually moved the other direction and now have a big collection of 18th and 19th century clocks.