Original U.S. WWI USN Submarine Gas Leak Alarm / Gas Attack Alarm - Wooden Ratter Revolutionary War made of waterproofed hemp with

made of waterproofed hemp with a leather liner that provides extra support in front and back

4 Officers and 45 Enlisted Men

When fully tightened it is straight as it should be

a first class of the Cross was created in pinback form

The flag is signed in two places to the left of the "Sun":

Original U.S. WWI USN Submarine Gas Leak Alarm / Gas Attack Alarm - Wooden Ratter Revolutionary War made of waterproofed hemp withOriginal Item: Only One Available. This instrument lived a double life as not only a chemical gas attack alarm, but a gas leak alarm as well. While aboard US Naval vessels, in the event of a gas leak, this alarm would be manually spun in the air creating a loud rattle noise, alerting the crew. In the event of an enemy gas ATTACK this device would have been used in the same manner and not necessarily by US Navy personnel, these were also used by ground