In 1913, Blériot Recalls ZENITH’s precision Using these words and phrases that he shared from the manufacturer’s guestbook: “I am really pleased with the ZENITH check out which I ordinarily use and I can't endorse it extremely sufficient to those who care about accuracy”. Lange & Söhne. I’ll clarify why: https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/