Keuffel & Esser 4081-3 Greg's Slide Rules
Front Left

Front Right

Back Left

Back Right


Keuffel & Esser 4081-3 - Notes

  1. I believe that this rule probably dates from roughly 1956, the serial number is too early for 1960. For K&E serial number dating use the link here to Ed Chamberlain's reference set of dating curves.
  2. This rule is almost identical to the 68 1210 and appears to be an earlier version of that rule which was renumbered by K&E.


Further details about this Slide Rule:

Brand Keuffel & Esser
Model 4081-3 Log Log Duplex Decitrig
Country of Manufacture USA
Scales Front LL02, LL03, DF [CF, CIF, CI, C] D, LL3, LL2
Scales Back LL01, L, K, A [B, T, SRT, S] D, DI, LL1
Number of Scales 21
Slide Rule Materials Wood/Celluloid
Cursor Materials Metal/Glass
Cursor Lines 1 Front, 1 Back
Scale Length 25 cm
Length 31.7 cm
Width 4.1 cm
Condition Good
Documentation None
  1. Leather and composite case
  2. Original box

Last updated: 2002-07-13 09:00 AEST
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