F.171 Data Sheet MJS-p-0328

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K&E, 4080-3, 1939

Serial Number or Date Stamp: 749101

Country: USA

Primary construction material: wd

Case included?: yes

General Description: Advanced linear log-log polyphase trig/decitrig duplex slide rule

Length of 1 decade = 10 in, and overall scale length = 10 in. The largest physical dimension is 10 in.

Front Scales: L LL1 DF [ CF CIF Ci C ] D LL3 LL2

Back Scales: LL0 LL00 A [ B T ST S ] D DI K

Notes: Scale set from 1939; KERCS; owner Richard Schroeder, on rule and embossed on case;

References: https://sliderulemuseum.org/KE_Standard.shtml

Date Acquired: 11/20/2023