In 1913, Blériot Remembers ZENITH’s precision Using these words that he shared in the brand name’s guestbook: “I'm really pleased with the ZENITH observe which I generally use and I can't recommend it highly adequate to individuals who treatment about precision”. Pierre Jaquet-Droz (1721-1790), founding father of the fashionable watchmaking https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/