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Keuffel and Esser Braille slide rule

Major collection: Science & Technology
Object type: slide rule
Maker: Keuffel & Esser Co.
Date made: 1952-1955
Materials: plastic
Measurements: 2 1/2 in x 12 1/2 in x 3/4 in

White plastic log log duplex slide rule with open wire cursor and Braille metal pins

Model 4181-3 Braille Slide Rule Description

Gift of Elliot Schreier

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