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Sphygmomanometer (blood presure apparatus), late 19th century.

Sphygmomanometer (blood presure apparatus), late 19th century.
4 0 c m
actual image size: 26cm x 32cm


The sphygmonanometer measures blood presure. This example, a type invented by Samuel von Basch, has an aneroid barometer dial showing changes in blood presure, unlike the modern ones which have a cuff and U tube. To take the maximum blood presure, it has a pelotte, or bulb which was presed onto the radial artery in the arm, until the pulse disappeared.

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