1820 - Dual Time Zone
Back to Timeline
Jean-François Bautte precursor of time measurement for travellers and the founder of the watchmaking company (it was absorbed by Girard-Perregaux in 1906) constructed a pocket watch equipped with second time indications in 1820. Each display can be set independently.
In 1860, with the advent of the Industrial Revolution, Girard-Perregaux developed a pocket watch showing the local time in the five largest cities in the world: San Francisco, Montevideo, Rio de Janeiro, New York and Paris.
Reported by: Tomasz Jakubas
Other records: Timeline of Watchmaking Innovations
YOU HAVE A COMMENT?