It’s rare to see a free sprung balance spring with weight-adjustment AND a swan neck regulator. Is the swan neck regulator just for show (and what a show this one carries out😍😍😍), or does it add to the isochronism and accuracy?
It’s rare to see a free sprung balance spring with weight-adjustment AND a swan neck regulator. Is the swan neck regulator just for show (and what a show this one carries out😍😍😍), or does it add to the isochronism and accuracy?