Gyrosyn Induction Compass / Directional Indicator Sperry ID-567/ASN B-52 P-39 Kollsman A26877-10-001

Kollsman A26877-10-001

but could be removed)

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

Here is a beautifully-presented chrome Letter Opener promotional item from the Standard Steel Propeller Company of Pittsburgh

Gyrosyn Induction Compass / Directional Indicator Sperry ID-567/ASN B-52 P-39 Kollsman A26877-10-001Here 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.