Air pressure demonstration apparatus

Air pressure demonstration apparatus

Stock Number: a16


E. Leybold air pressure demonstration apparatus - 1890-1905


64cm high by 24cm diameter at base



Country of manufacture


Categories: Barometers & Meteorology, Physics & Chemistry


Rare apparatus to demonstrate the effect of air pressure on the flow of liquid. Originally designed by Professor Sturm, this apparatus was made in Germany by E. Leybold between 1890-1905. Constructed of brass and glass. An identical example can be found in the University of Oviedo Scientific Instrument Collection in the Asturias mining museum, Northern Spain. In operation the top reservoir is filled with water and sealed. Water is then allowed to leak from the three droppers into the tray below and pulling water up the centre column until the air pressure above the water in the top reservoir is balanced by the local air pressure. The height of the centre water column varies with variation in the external air pressure.


Has a small splits to the top of the brass rim of the lower basin and a few minor dents commensurate with the age and nature of operation of the instrument but does not affect its operation. Has a replacement cork stopper and rubber seals to brass dish.

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GB Collector Tolemy

A Yorkshire based collector all things unusual for 40 years covering a diverse range of subject matter across the archaeology of science, with a common theme towards rare and one-of-a-kind, architectural, functional instruments and scientific objects for investment, display and interior design. A frequent business traveller across Europe the USA and Australasia in the quest for new objects. Collector Tolemy can be contacted at

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