The WWI Gas Alarm Trench Rattle was used in the trenches in WWI to alert soldiers of mustard gas. The trench rattle made a reappearance during WWII. During the second world war, the gas rattle was used by the British ARP ( Air Raid Precautions ) and the American Civil Defense.
The Gas Rattle was held in the hand and cranked by spinning it in the air. This new reproduction is fully working and makes a nice loud sound.