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Duckwells

1940s Keuffel and Esser Log Log Duplex Trig Slide Rule Model 4080-3

1940s Keuffel and Esser Log Log Duplex Trig Slide Rule Model 4080-3

Regular price $ 75.00 USD
Regular price Sale price $ 75.00 USD
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This is a vintage Keuffel and Esser Log Log Duplex Trig Slide Ruler, model 4080-3. The late 1940s-early 1950s version, the 10" duplex slide rule was constructed on a mahogany wood frame with a celluloid overlay laminated surface.

The rule is in good vintage condition with little graphic loss and some discoloration. The glass cursor is has no chips and minimal scratches. Original brown leather case is included in very good vintage condition. The case measures approximately 13" tall by 2.5" wide at top rim.

Rule Details:
SN: 332844
Scale sets: Front: LL01, L, K, A [ B, T, ST, S ] D, DI, LL1 Back: LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2 Note: No 1/e label on Right of LL02 and Left end of LL03

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