For BREITLING, the name Montbrillant naturally conjures up pictures of the time and place of its first great chronograph factory, perched on a sunny hillside overlooking the Swiss watchmaking city of La Chaux-de-Fonds. It is there that the ingenious inventions of the Breitling family were born, including the most important, the second return-to zero pushbutton, and the most famous, the circular slide-rule created in 1942.