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Keuffel & Esser 4092-3 - Notes
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- I believe that this rule probably dates from roughly 1926/27, the serial number is too early for 1930. For K&E serial number dating use the link here to
Ed Chamberlain's reference set of dating curves.
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Details
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Further details about this Slide Rule:
| Brand |
Keuffel & Esser |
| Model |
4092-3 Log Log Duplex |
| Country of Manufacture |
USA |
| Scales Front |
K, DF [CF, CIF, CI, C] D, L |
| Scales Back |
LL0, A [B, S, T, C] LL3, LL2, LL1 |
| Number of Scales |
17 |
| 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 cm |
| Condition |
Good, some small scratch marks on surface |
| Documentation |
None |
| Accessories |
Leather case |
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