ZENITH Solidifies its Worldwide track record since the major manufacturer of precision chronometers and instruments throughout many domains. Pierre Jaquet-Droz (1721-1790), founder of the modern watchmaking house that bears his title, was not merely Among the most renowned watchmakers of the 18th century; he was also a pioneer in the https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/