Sphygmomanometer and case made by Hawksley & Son, 83 Wigmore Street, London, modified by Sir Charles Martin, 357 Oxford Street, London. The sphygmomanometer is a device for measuring a patient's blood presure, an indicator of circulatory health. This example incorporates a manometer measuring device, an air-filled rubber bulb and arm cuffs. The Riva-Rocci principle was named after the Italian, Scipione Riva Rocci (1863-1937), who invented the sphygmomanometer upon which modern devices are based, in 1896.
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