If you'd like to read a comprehensive blog post about the intricate mechanisms that make a mechanical watch work, with amazing interactive visualizations, I recommend reading this blog post[1] by Bartosz Ciechanowski, a person famous on HN for his high quality blog posts that explain things comprehensively, with nice visualizations. (the #1 top post on HN right now is his new blog post about the moon [2]).

[1] https://news.ycombinator.com/item?id=31261533 [2] https://news.ycombinator.com/item?id=42443229