Face mask
1890-1920
Modern ferrule and stopcock
2-valve manifold (sectioned)
1985-1995
Bronze stopcock
1-1900
Single straight bore stopcock
Stopcock, single straight bore
Three way stopcock
Three-way oblique bore stopcock
Three-way oblique bore stopcock
Face mask
1894-1930
Three-way T-shape stopcock
Stopcock single straight bore
Single straight bore stopcock
Stopcock, two oblique bore stopcocks joined make a "T"
Straight stopcock
Stop-cock for anaesthetic
1866-1919
Stopcock, bronze, complete
10-350 CE
Face mask for anaesthetic
1866-1919
Stop cock, lead and bronze, Roman, 10-350AD
10-350 CE
Part of metal stopcock
1-300 CE
Face mask and stop-cock for anaesthetic
1866-1919
Face mask and stopcock from "Somnoform Inhaler
1871-1920