Hill and Barnard sphygmomanometer, London, England, 1886–189

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Hill and Barnard sphygmomanometer, London, England, 1886–189. The original sphygmomanometer was devised by Samuel Von Basch (1837–1905) in 1881. It measured blood pressure by slowly applying a measured force to the skin over an artery until the pulse disappeared. This example is a variation known as a Hill and Barnard sphygmomanometer. It is named after its designers Dr Leonard Hill (1866–1952), a British physiologist, and Harold Barnard (1868–1908), a British surgeon. Measuring blood pressure as a health check only became common practice from the 1920s. Contributors: Science Museum, London. Work ID: cq5qy8u7.

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