Martin sphygmomanometer by Hawksley and Sons Limited

Martin sphygmomanometer by Hawksley and Sons Limited

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Martin sphygmomanometer by Hawksley and Sons Limited
Science Museum Group
© The Board of Trustees of the Science Museum

Martin sphygmomanometer by Hawksley and Sons Limited, 357 Oxford Street, London, England, in case, 1901-1920.