The WWI Double 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 Double Gas Rattle was held in the hand and cranked by spinning it in the air. This new reproduction of the Double Rattle is fully working and makes a very loud sound.