In 1913, Blériot Recalls ZENITH’s precision with these words that he shared from the manufacturer’s guestbook: “I am incredibly satisfied with the ZENITH view which I usually use and I are unable to propose it really more than enough to individuals who care about precision”. Pierre Jaquet-Droz (1721-1790), founder of https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/