"Jules Richard Barograph. 10 Capsules."
Richard Frères brand recording barometer, produced circa 1920/1930. Luxurious ten Vidi capsules. Cylinder escapement clockwork movement. Chromed brass cabinet with glass on all sides. Winding is done from above using a double key. The thin part of the key is used to calibrate the barometer according to the altitude. The drum has a revolution of seven days.