Spirometer, Phoebus, 1901

Spirometer_Phoebus_1901

From: Der Ausbau im diagnostischen Apparat der klinischen Medizin. By Martin Mendelsohn.  Published by Bergmann, 1901, page 131.

Although this drawing was published in 1901, the Phoebus spirometer is mentioned in medical texts starting in the early-1850’s.

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