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Keuffel & Esser 68 1100 Deci-Lon - Notes
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- This rule was the last of the general purpose rules designed by K&E prior to ceasing slide rule manufacture.
- Names Deci-Lon after the decimal configuration of trigonometric scales introduced by K&E and the pronunciation of
"Ln" symbol for logarithms.
- The stator bars on this model are asymmetric allowing for an increased number of scales on one side of the rule.
- Known as a classic amongst collectors this rule seems to have a wide variety of general purpose scales in a balanced
layout. I certainly doesn't have the most scales or even the most unusual scales.
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Details
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Further details about this Slide Rule:
| Brand |
Keuffel & Esser |
| Model |
68 1100 Deci-Lon |
| Country of Manufacture |
USA |
| Scales Front |
Sq1, Sq2, DF [CF,
CIF, L, CI, C] D, Ln0, Ln1, Ln2, Ln3 |
| Scales Back |
Ln-3, Ln-2, Ln-1, Ln-0, A [B, T, SRT, S, C] D,
DI, K |
| Number of Scales |
26 |
| Slide Rule Materials |
Ivorite |
| Cursor Materials |
Nylon/Metal/Plastic with metal screws |
| Cursor Lines |
1 Front, 1 Rear |
| Scale Length |
25 cm |
| Length |
32.3 cm |
| Width |
4.9 cm |
| Condition |
Good |
| Documentation |
 |
| Accessories |
Leather case |
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