Archive of Collections

Details and Image

TypeModel No.MakerCountryConstruction
DateScale LengthArea of Use
Air Line Flight Calculator
1940'sDia. = 11.7 cm Aviation

Notes: 1) Flight planning and navigation 2) This item has an actual disk in disk slide rule with C and D scales 3) This interesting item was owned by a C47 (DC3) and TWA Constellation pilot 4) No manufacturer or other identification can be found on the rule 5) Unique wind correction to determine true course on the reverse side

Image 1

Image 2