SA-3/A, BC-706a Detonator Impact, Inertial Switch for Radio Sets SCR-595,-695 and ABK IFF System

Here is a rare example of a WWII-era Detonator Impact / Inertial Switch used in the Identification Friend or Foe Radio System SCR-595 and -695 (or ABK as termed in US Navy aircraft).  This system was deployed across most aircraft of the US Army Air Force and Navy, including B-17, B-24, B-29, P-51, and P-38.  In the event of a crash that would risk this equipment getting into the hands of the adversary, this Inertial Switch would trigger upon impact and ignite the explosive charges installed within the cabinet of this radio system.  From a WWII Navy Radar Operator’s Manual: “There is always the possibility of aircraft being forced down or shot down with the ABK itself still in an undamaged or repairable condition. To guard against this contingency, a detonator is installed in every ABK unit. This detonator or "destructor" is an explosive charge inserted into the side of the cabinet. When exploded, it can destroy the insides of the unit so completely that it is impossible for the enemy t