Keuffel & Esser 68 1210 (2) Greg's Slide Rules
Front Left

Front Right

Back Left

Back Right


Keuffel & Esser 68 1210 (2) - 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 4081-3 and appears to have only been renumbered by K&E.


Further details about this Slide Rule:

Brand Keuffel & Esser
Model 68 1210 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 Fair, some ink marks, cursor is dirty and previous owner's name engraved into the metal end piece at the front.
Documentation None
Accessories Leather case, previous owner's name embossed

Last updated: 2002-07-13 14:00 AEST
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