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Details and Image
Type
Model #.
Aircraft Maker / Name
Instrument Maker
Country
Construction
Date
Scale Length
Area of Use
Linear
KHN-57
Generic Instrument
Made for Bulgarian Air Force
Bulgaria
Plastic
c. 1957
7.2 cm x 17.5 cm
Flight 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
