ISRB Anti-Disturbance Fuze (Air Armed).

Introduced in 1943, the Anti-Disturbance Fuze (Air Armed) was designed by the Inter Services Research Bureau based at Station IX, Welwyn. This device was designed to be assembled into an explosive device or charge when it is laid to prevent anyone from removing it. Zinc alloy casting threaded to accept a Type 6 burster with mechanisms designed to initiate on application of pressure or release.
' For use, the fuze is placed into a cavity in the bottom of a charge with the safety strip protruding out the side and the release lever facing down. The weight of the charge is used to hold the release lever in the closed position. Just prior to placing the charge in position, the crushing lever is lifted until the copper tube is crushed starting the arming delay. The charge is then placed in position and the safety strip removed. Once in position if someone attempts to remove the charge, the release lever is free to move, the striker pushes against the ball forcing it out of the way and continues on to hit the detonator in the burster. When the burster fires it will set off the main explosive charge.'
Contained in it's original packing tube and taped ready for use. Scarce.
INERT
UK Sales Only

Code: 9933