For Timepiece aficionados and connoisseurs, a COSC-validated timepiece isn’t simply a merchandise of tech but a evidence to lasting excellence and precision. It represents a timepiece that: Offers superb dependability and precision. Pierre Jaquet-Droz (1721-1790), founding father of the fashionable watchmaking house that bears his name, was not only one https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/