
1764
Two years after setting up business in London, John Arnold rose to prominence when he mounted a half-quarter repeater movement inside a ring.
1770
John Arnold presented his first marine chronometer to the Board of Longitude, which awarded him a prize of £200.
1792
John Arnold met Abraham-Louis Breguet, giving him full permission to incorporate his inventions in precision timekeeping into his own watches.
1995
After a one-hundred-year hiatus, the Arnold & Son brand was relaunched in La Chaux-de-Fonds, Switzerland.