Conversation tube hearing aid
1851-1900
Conversation tube hearing aid, probably English, 1750-1840
1750-1840
Vulcanite conversation tube hearing aid
1860-1920
Tube of sterile ligatures
1870-1901
Fahrenheit thermometer
1880-1920
Tambour from a sphygmograph
Conversation tube hearing aid, probably English, 1800-1840
1750-1840
Ointment introducer, glass mouthpiece and nozzle
1870-1910
Intravenous needle
1901-1920
Conversation tube hearing aid
1801-1900
"The Harley" sphygmomanometer by S. Maw Son and Sons
1901-1930
Nozzle from aspirating syringe
1901-1925
Conversation tube hearing aid
1801-1900
Champetier-de-Ribes' bag for inducing labour
1887-1910
Pearson Lillingstone apparatus for inducing artificial pneumothorax
1901-1925