History of Watchmaking

Emile Borer made the first self-winding wristwatch whose unidirectional rotor swung in a complete circle: the Rolex Perpetual.
Carouge-born Louis Cottier (1894-1966) made a watch showing universal time (with 29 world cities) for the Genevan jeweller Baszanger.

World history

Proclamation of the Republic of Spain.
Inauguration of the Empire State Building.
Creation of the Commonwealth.

Swiss history

As part of a study to measure cosmic rays, Switzerland’s Professor Auguste Piccard and his assistant Paul Kipfel made a record-breaking ascent of 16,000 metres in a balloon with a pressurised cabin. Professor Piccard set a new record of almost 17,000 feet the following year, after which he devoted himself to underwater diving. The world economic crisis, which had begun in the United States in 1929, reached Switzerland.