Existing comment:
Viet Cong Anti-Disturbance Device (homemade):
This simply constructed device consists of a flashlight battery, a bulb, two wires, and a sensing device. When disturbed, the V ball bearing in the sensing device rolls down to the opposite end, completing the electrical circuit and lights the bulb. The anti-disturbance device was used for initiating action for mines and booby traps. |