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Details and Image

TypeModel #.Aircraft Maker / NameInstrument MakerCountryConstructionDateScale LengthArea of Use
Generic Instrument Made for Bulgarian Air Force
Plasticc. 19577.2 cm x 17.5 cmFlight Management

Comment: 1) An interesting flight calculator with one side for wind triangle calculations (slide missing) 2) the other side has a two slide linear slide rule for navigation and flight management calculations

Image 1

Image 2