Archive of Collections

Details and Image

TypeModel No.MakerCountryConstruction
DateScale LengthArea of Use
"Slide Rules, Other"
Monroe / Slide Rule Pencil
Monroe Manufacturing Co.
7 cm
Basic Calculations

Notes: "A boxed piston style mechanical drop pencil that was, as here, often a novelty promotional advertising gift - probably working better as an ad than as a slide rule as it only slides to the right. "

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