Sphygmomanometers, early-mid 20th century | A Fine Collection
File:Potain type sphygmomanometer, Paris, France, 1898-1910 Wellcome L0065149.jpg - Wikimedia Commons
Early 20th Century Sphygmomanometers, Manometers, and Other Blood Pressure Devices | Cowan's Auction House: The Midwest's Most Trusted Auction House / Antiques / Fine Art / Art Appraisals
Detailed Illustration of an Antique Blood Pressure Monitor of the Sixties of Mercury Stock Image - Image of instrument, pressure: 259550553