In 1913, Blériot Recalls ZENITH’s precision with these text that he shared within the model’s guestbook: “I'm pretty happy with the ZENITH enjoy which I ordinarily use And that i can't advise it highly adequate to individuals who treatment about precision”. 6 miles, or fifty five.seven km) at the end https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/