Stopcock, steel and rubber, late 19th century
1871-1900
Glass stopcock
Vulcanite stopcocks
1901-1950
Vulcanite stopcock
1871-1920
Vulcanite stopcock, probably English, 1880-1930
1880-1930
Part of vulcanite stopcock
1890-1940
Stopcock, possibly for use with a syringe
Stopcock, vulcanite, English, 1860-1920
1860-1920
Stopcock for use with syringe
Stopcock, steel, 1880-1920
1880-1920
Two stopcocks for use with pneumothorax apparatus
Vulcanite stopcocks
1901-1950
Stopcock, vulcanite, English, 1860-1920
1860-1920
Stopcock for gas cylinder by the British Oxygen Co.
Vulcanite stopcock
1901-1950
Stopcock, vulcanite, probably English, 1860-1900
1860-1900
Part of stopcock from gas cylinder
1880-1920
Part of foot operated stopcock
1880-1920
"Endurance" gas cylinder regulator
1920-1940