The water depression flowmeter.
Ball
C
C
Geoffrey Kaye Museum of Anaesthetic History.
Westhorpe
R
R
D000776:Anesthesiology / Q000266:history* / Q000295:instrumentation; D001317:Austria; D049673:History, 20th Century; D006801:Humans; D012212:Rheology / Q000266:history*; D014481:United States