Pocket watch for the blind

The presented pocket watch told the time without the need to look at the dial. The front of the case takes the form of a lid with a convex arrow and was used as a dial. From the clockwork side there is a flap blocking the lid rotation. In order to determine the time, the lid with the arrow rotated counterclockwise until resistance of the flap. On the circumference of the watch there are balls indicating the sequential hours. They are not differentiated, except at 12.00, which is determined by the jump ring used to hang the watch. The arrow indicated the appropriate ball representing the hour. The minutes are not marked; they can only be estimated based on the position of the arrow between the hour points. Creator: Abraham Louis Breguet (1747–1823) Time and place of creation: early 19th century, Paris Jagiellonian University Museum Collegium Maius Inventory number: 1721; 1434/V https://muzea.malopolska.pl/en/objects-list/2739 Source: Objaverse 1.0 / Sketchfab