ZENITH Solidifies its Worldwide track record because the main manufacturer of precision chronometers and devices throughout several domains. Pierre Jaquet-Droz (1721-1790), founding father of the fashionable watchmaking household that bears his name, was not merely one of the most renowned watchmakers on the 18th century; he was also a pioneer https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/