Spirometer, 1876-1900.

Spirometer, 1876-1900.
Respirometer, manufactured by Walker Lecuyer, Paris. This is of a similar design to Hutchinson�s. The subject breathed into the inner gasholder via a tube connected to the inlet pipe at the base. The gasholder is balanced over water by the counter weight and its upward movement indicated the volume of gas expired by the subject.
Currently on display in:
The Science and Art of Medicine
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