The Girard-Perregaux Constant (Force) Escapement from HODINKEE on Vimeo
Design Constant (Force) Escapement / Girard-Perregaux By Red Wolf 23 November 2013 6 second read Leave a comment In Design 690 views 0 The Girard-Perregaux Constant (Force) Escapement from HODINKEE on Vimeo Share this Story