The rolex factory is quite impressive:
https://www.hodinkee.com/articles/inside-rolex
Certainly nowhere on the scale or awe of what the large automakers like Toyota or Honda have done, but impressive nonetheless (to a layman like me, at least)
https://www.hodinkee.com/articles/inside-rolex
Certainly nowhere on the scale or awe of what the large automakers like Toyota or Honda have done, but impressive nonetheless (to a layman like me, at least)