IFF Radio Destruct Switch Box BC-765 WW2; B-17, B-24, B-29 C-7 This is a matched set

This is a matched set of dual engine Torque Pressure / BMEP Indicators

and the internal mechanism can be removed to reveal the electrical gyroscope

This is a 1950s-vintage aircraft Fuel Quantity Indicator

Here is a Remote Indicating Compass

The illuminating lamp is present under the center top screw

IFF Radio Destruct Switch Box BC-765 WW2; B-17, B-24, B-29 C-7 This is a matched setThe BC 765 Switch Box was installed in the cockpit of many bomber or transport aircraft of WW2 as part of the SCR 595 or 695 Identification Friend or Foe (IFF) radio systems. In the event of potential capture of the aircraft by enemy, the crew was to destroy the IFF system. By pressing the two buttons on this switch simultaneously, charges placed within the radio's cabinet would detonate thus destroying the radio. See instruction page from the SCR 595