Manometer

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“Mercury manometer for recording blood-pressure. d g, glass U-tube partly filled with mercury. In one limb is borne a float, e, bearing a recording device f; the other limb is filled with a suitable liquid and connected water-tight with the heart end of a divided artery b, by means of glass connection a. Changes in the mercury level indicated changes of arterial pressure.” —Martin, 1917

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Health Care

Source

H. Newell Martin, The Human Body (New York: Henry Holt and Company, 1917) 367

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