Historical information
During World War One poisonous gas was used as a weapon. When gas was detected or suspected an alarm was given in the trenches so soldiers could put on masks and protective gear. The gas rattle was a simple and effective method of raising the alarm. Gas precautions were taken in World War Two but gas was not used. This rattle might be WWI vintage or it might be from WWII era.
Physical description
A wooden box incorporating a toothed cog attached to a 'swing' handle. When swung the toothed cog engaged with a wooden flap enclosed in the box causing a loud noise.
