289-4C3, G-502C, AIM Aircraft Slaved Directional Gyro Indicator
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3 1/8" Cessna Aircraft / AIM Slaved Directional Gyro Indicator as shown on photos. P/N 289-4C3 or G-502C. ARC P/N 40840-0204. It was removed from a salvage aircraft but has not been tested. Knobs turn and function as designed even with attached screws instead of set screws. Please read return policy details before purchasing.