Barographs record pressure changes in weather systems on a weekly chart known as a barogram. The recording paper is mounted on a drum which revolves by clockwork. This fascinating brass instrument combines the functions of a barometer and clock and records pressure changes in the weather in the form of a trace. Mounted on a solid mahogany case with a pull out drawer to store your charts the lift off lid has thick bevelled glass all round.
Size: 8"x14¼x8" (216x375x216mm)