


Stopcock, steel and rubber, late 19th century
1871-1900

Vulcanite stopcocks
1901-1950

Stopcock, possibly for use with a syringe

Vulcanite stopcock
1871-1920

Vulcanite stopcock, probably English, 1880-1930
1880-1930

Part of vulcanite stopcock
1890-1940

Stopcock, vulcanite, English, 1860-1920
1860-1920

Vulcanite stopcocks
1901-1950

Stopcock for use with syringe

Stopcock, steel, 1880-1920
1880-1920

Two stopcocks for use with pneumothorax apparatus

Vulcanite stopcock
1901-1950

Stopcock, vulcanite, probably English, 1860-1900
1860-1900

Stopcock, vulcanite, English, 1860-1920
1860-1920

Stopcock for gas cylinder by the British Oxygen Co.
Part of stopcock from gas cylinder
1880-1920
Part of foot operated stopcock
1880-1920
"Endurance" gas cylinder regulator
1920-1940