In 1913, Blériot Recollects ZENITH’s precision Using these terms that he shared during the brand’s guestbook: “I am very satisfied with the ZENITH observe which I usually use and I are unable to recommend it highly ample to individuals who treatment about accuracy”. Pierre Jaquet-Droz (1721-1790), founding father of the https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/