This is a extremely interesting English directional gyro, DIRECTIONAL GYRO C.L.11, Made in England by SPERRY GYROSCOPE CO LTD, Brentford Middlesex, Directional gyro for fighter aircraft, The Sperry CL-11 directional gyro was replaced by the SYP-820 gyro platform for the Fiat G.91Y, the Sperry C.L. 11 directional gyroscope is a high-quality avionics component from Sperry Flight Systems. This gyroscope, with the manufacturer’s part number [number missing in original text], is compatible with various avionics systems and is an important component for precise and reliable aircraft navigation. No guarantee can be given regarding its functionality; this particular product was installed in a German Fiat G91, kompass is used but very good condition,Original condition with signs of age and storage as seen in the pictures,used at German Air Force,note that all our items are pure collector items or display items. The items are not tested for real use and have no aeronautical exams or clearances. Use is at your own risk !