Aspirating syringe
1890-1920
Skin test kit, England, 1925-1935
1925-1935
Cavendish injector gas-air apparatus
1943-1945
Last's intramuscular penicillin administration apparatus
1945-1955
Telescoping stand and two lenses for drawing camera lucida
1850-1870
Davis' later C19 magneto-electric therapy apparatus
1865-1900