John Arnold (1736-1799) was an English watchmaker and inventor known for his pioneering work on precision timekeeping and chronometry. His legacy in the field of mechanical watchmaking has been lasting producing portable and accurate marine chronometers that have shaped the modern mechanical watch as well as having invented the overcoil hairspring. In 1764 Arnold presented to His Majesty King George III a quarter repeating cylinder watch mounted in a ring earning him much renown in the world of horology and leading to his illustrious career. Today Arnold & Son is a Swiss watchmaking brand rooted in the history of John Arnold. As a tribute to the master horologist their collections are centered on three pillars: world-time chronometry and astronomy and seek to perpetuate Arnold’s legacy while exploring modern ways to interpret traditional horology.