Sphygmomanometer, cased, by Hawksley and Son
Martin sphygmomanometer
1901-1925
Sphygmomanometer by Surgical Instrument Co.
Brunton sphygmomanometer
1901-1923
Sphygmomanometer, ex Cuthbert Coll.
Sphygmomanometer by Holborn Surgical Instrument Co. Ltd.
1913-1930