International Workshop AP

Wolfgang Bode's mystery slide rule

“NO.83” 20 cm plastic

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Slide rule Front and box Back and box
Left Right

Data:

  • Slide rule with a length of the scales 20 cm
  • CF/DF folded at square root of ten
  • Made of a kind of plastic.
  • Formulas and conversion tables in English on the backside.
  • No trig-scales.
  • The well of the body is empty.
  • Marked “NO.83”

Questions:

  1. Who knows the manufacturer?
    It is a Fuji 83 2nd version as we find the picture in the catalogue of Jose Fernández and in his file source, the MIT Museum. David Rance
     
  2. How old could this be?
    Exact date is unknown. Fuji's business is assumed to have been started between 1945 and 1949 and ended by 1975 or 1978 (Jose Fernández, “FUJI - Circling the World with Straight Slide Rules”, Proceedings IM2014, page 100)