Now, this other thing. Looks a lot like the sleeve wrench, but totally different function.
This is a "jewel pusher," designed for removal and replacement of watch jewels, the little ruby donuts that act as low-friction bearings for a lot of the moving parts in a good watch. "17-jewel movements" and such? Yeah. That means 17 little tiny donuts of actual ruby in little fittings to make things run smooth.
Jewels are fiddly pains in the ass and I try to avoid dealing with them.













