In 1913, Blériot Recalls ZENITH’s precision Using these terms that he shared from the manufacturer’s guestbook: “I'm really content with the ZENITH observe which I commonly use And that i can not advise it really plenty of to people that care about accuracy”. 6 miles, or fifty five.7 km) at https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/