K&E 9068 Doric Pocket Duplex slide rule 1949-1951 - 6-3/8 inches long - in leather case

Made in U.S.A. by Keuffel & Esser Co., New York

Front Scale: K, A [ B, ST, S ] D, T

Back Scale: DF [ CF, CI, C ] D, L


Check out my other items!   I will be listing 2 pocket slide rules made by Keuffel & Esser (K&E) and Nestler.


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