Physical description
This has a steel cylindrical chamber, volume approx 150 ml. On the top cap is a lever and plunger assembly. There is a nozzle pipe assembly coming from the plunger assembly. The top of the nozzle is threaded. Colour was silver but most of the paint has fallen off.
Inscriptions & markings
On top of the lid is = "WESCO B. HAM".
"Pat. 229148, 233109, NOS. 306343".
