LEAR SIEGLER AJB-3 GYRO SCOPE F4 AND A4 AIRCRAFT USE

THIS IS VIET NAM ERA STUFF ..USED IN A4 SKYHAWKS AND EARLY F4 AIRCRAFT ..GOOD CHANCE WAS ON NAVY AIRCRAFT OPERATING IN YANKEE STATION OR IN OTHER ON SHORE BASES ..THIS IS A DOUBLE GYRO UNIT ..GAVE DIRECTIONAL INFO AS WELL AS AIRCRAFT ATTITUDE INPUTS. UNITS ARE HERMETICALLY SEALED ..BAND NEEDS TO BE DE-SOLDERED FOR DISPLAY ACCESS ..THESE ARE NON AIRWORTHY UNITS..HAVE SOME TECHNICAL DATA VIA EMAIL FILES ..USED SOLD AS IS .NO INTERNATIONAL SALES