In 1913, Blériot Recollects ZENITH’s precision Using these words and phrases that he shared in the brand’s guestbook: “I am really happy with the ZENITH observe which I commonly use And that i are unable to recommend it highly sufficient to people that care about accuracy”. six miles, or 55.7 https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/