In 1913, Blériot Remembers ZENITH’s precision with these words that he shared during the model’s guestbook: “I am pretty pleased with the ZENITH observe which I typically use and I are not able to propose it very sufficient to those who treatment about precision”. Pierre Jaquet-Droz (1721-1790), founding father of https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/