Manometer from early example of Gaertner sphygmomanometer (tonometer), German, 1801-1900 Manometer from early example of Gaertner sphygmomanometer (tonometer) 1801-1900
Sphygmomanometer, cased, by Hawksley and Son, 357 Oxford Street, London, England. Sphygmomanometer, cased, by Hawksley and Son
Gaertner sphygmomanometer by Schulmeister, in case, Austrian Gaertner sphygmomanometer by Schulmeister
Sphygmomanometer by Hawksley and Sons Limited, 357 Oxford Street, London, England. Sphygmomanometer by Hawksley and Sons Limited
Sphygmomanometer by Holborn Surgical Instrument Co. Ltd., English, 1913-1950 Sphygmomanometer by Holborn Surgical Instrument Co. Ltd. 1913-1930
Sphygmomanometer, ex Cuthbert Coll., in case, by Allen and Hanburys, 48 Wigmore Street, London, England. Sphygmomanometer, ex Cuthbert Coll.