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
Sphygmomanometer, ex Cuthbert Coll., in case, by Allen and Hanburys, 48 Wigmore Street, London, England. Sphygmomanometer, ex Cuthbert Coll.
Sphygmomanometer by Holborn Surgical Instrument Co. Ltd., English, 1913-1950 Sphygmomanometer by Holborn Surgical Instrument Co. Ltd. 1913-1930
Sphygmomanometer by Hawksley and Sons Limited, 357 Oxford Street, London, England. Sphygmomanometer by Hawksley and Sons Limited
Gaertner sphygmomanometer by Schulmeister, in case, Austrian Gaertner sphygmomanometer by Schulmeister