Eterna Regulation

Archer

Just to introduce some consistent language to the discussion, "regulating" is the simple and typically very quick act of moving the average rate of the watch. If it takes you a lot of time to do this as a professional watchmaker (referring to your comment about the time needed) then you should look for a different profession. 😉
Cheers, Al

Stewart H

Thank Al.

Once again an interesting and informative post. 👍