Contactor Unit BC-608-A of RC-96A System Pipsqueak Grumman the operating ranges for each

the operating ranges for each parameter are labeled in green/red on each scale

The front mounting bracket is set in place but not screwed in

This electrical Tachometer was used in Cold War-era jet fighters and trainers of the United States Air Force

a tall pilot might want to climb his aircraft that is actually in level flight

when learning its true origin and purpose

Contactor Unit BC-608-A of RC-96A System Pipsqueak Grumman the operating ranges for eachHere is an excellent example of the WWII era Contactor Unit BC 608 A, a component of the US Army Air Force's RC 96 A Contactor System intended to work with the the British RAF "Pipsqueak" system. Pipsqueak was a simple radio navigation system used by the British during the early part of World War II. Pipsqueak used an aircraft's voice radio set to periodically send out a 1 kHz tone which was picked up by ground based high frequency direction finding