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Keuffel & Esser slide rule, model 4081-3 | by s58y
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Keuffel & Esser slide rule, model 4081-3

Slide rule -- KEUFFEL & ESSER CO. N.Y.

  

Date Taken : 2004/12/11

 

Camera: Canon 10D

 

Lens: Canon EF 100mm f/2.8 Macro lens

 

Exposure: f/16 at 1 second, ISO 100

  

This slide rule is from around 1940. It was used by my father UC Berkeley engineering school from 1940-1942,and later by me in engineering school from 1966-1971.

  

Note: This slide rule needs alignment.

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Taken on December 11, 2004