In 1913, Blériot Remembers ZENITH’s precision with these text that he shared inside the model’s guestbook: “I am really content with the ZENITH watch which I commonly use And that i can not advise it very more than enough to people that care about accuracy”. Lange & Söhne. I’ll describe https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/