In 1913, Blériot Recalls ZENITH’s precision Using these words and phrases that he shared inside the manufacturer’s guestbook: “I am pretty happy with the ZENITH watch which I generally use And that i simply cannot recommend it extremely sufficient to those who treatment about precision”. Pierre Jaquet-Droz (1721-1790), founding father https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/