In 1913, Blériot Recollects ZENITH’s precision Using these phrases that he shared in the model’s guestbook: “I am extremely happy with the ZENITH check out which I normally use And that i simply cannot endorse it highly sufficient to people who treatment about precision”. six miles, or fifty five.7 km) https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/