In 1913, Blériot Recalls ZENITH’s precision with these phrases that he shared from the model’s guestbook: “I'm very pleased with the ZENITH watch which I generally use and I simply cannot propose it really ample to individuals that treatment about precision”. Pierre Jaquet-Droz (1721-1790), founding father of the trendy watchmaking https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/