American watches had odd movement sizing. (Kind of their version of ligne). This charts converts movement size to millimeters:
(Image credit: http://www.keepthetime.com/blog/the-faqs/pocket-watch-size-guide/)
American watches had odd movement sizing. (Kind of their version of ligne). This charts converts movement size to millimeters:
(Image credit: http://www.keepthetime.com/blog/the-faqs/pocket-watch-size-guide/)
