Gyrosyn Induction Compass / Directional Indicator Sperry ID-567/ASN B-52 P-39 Here is an engine Torque

Here is an engine Torque Pressure Indicator

Kollsman A26877-10-001

Here is an unusual aircraft Engine Triple Gage using the GE Type DJ-3 electrical instrument platform

as used in large aircraft in both British military and civil service during the 1950's in Reconnaissance/Bomber aircraft such as the Avro Shackleton and English Electric Canberra

The photos show both the external and internal workings of the gun sight: an exquisite electro-mechanical computer developed well before the era of microchips

Gyrosyn Induction Compass / Directional Indicator Sperry ID-567/ASN B-52 P-39 Here is an engine TorqueHere is the Induction Compass (Directional) Indicator for the Sperry Gyrosyn Compass system used in a number of Cold War era US Military aircraft such as the B 52 Stratofortress. See location of the instrument in the photo of a B 52 pilots instrument panel taken at Castle Air Museum. The knob turns the compass card when depressed, otherwise the card indicates direction given the appropriate electrical input from the remotely mounted directional gyro.