Spiral scale of chords in the form of a circular slide rule

Spiral scale of chords in the form of a circular slide rule, with celluloid cursor in metal mount, cardboard 4 13/16-inch diameter with descriptive leaflet

Details

Category:: Mathematics

Object Number:: 1927-409

type:: circular slide rule

credit:: Mr L. Malassis

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Spiral scale of chords in the form of a circular slide rule

Details

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