In 1913, Blériot Recalls ZENITH’s precision with these phrases that he shared during the brand’s guestbook: “I am really content with the ZENITH observe which I generally use And that i cannot advise it really more than enough to those who care about precision”. Lange & Söhne. I’ll explain why: https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/