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Details and Image

TypeModel #.Aircraft Maker / NameInstrument MakerCountryConstructionDateScale LengthArea of Use
Airline Flight Calculator
Manufactured for United Airlines with serial # 4653Whitehead & Hoag Co.
Plastic1940"Dia. =11.8 cm, L = 26.1 cm"Navigation

Comment: "1) Used for navigation problems such as time and distance, wind vectors, true airspeed 2) Has a disk in disk circular slide rule 3) Designed by E.C. Hoakanson"

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