Keuffel & Esser 68 1210 (1) Greg's Slide Rules
Front Left

Front Right

Back Left

Back Right


Keuffel & Esser 68 1210 (1) - Notes

  1. I believe that this rule probably dates from roughly 1957/58, 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 Good
Documentation None
Accessories Leather and composite case

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