Vintage Keuffel & Esser K&E Log Log Duplex Slide Rule No. 4097B w/ Case
4.3 (27 items)
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Product details
| Management number | 55200854 | Release Date | 2026/02/07 | List Price | $36.59 | Model Number | 55200854 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
Authentic vintage Keuffel & Esser (K&E) slide rule, Model No. 4097B, made in the U.S.A. Classic Log Log Duplex configuration with multiple calculation scales. Includes original brown leather K&E case.Ideal for collectors, engineers, educators, or vintage science décor.
Brand: Keuffel & Esser (K&E)
Model: 4097B
Type: Log Log Duplex slide rule
Material: Celluloid-covered wood
Country of Manufacture: USA
Patent marking: PAT. 1,875,927
Original leather K&E case included
Condition:
Slide moves freely
Scales and numerals are legible
Expected age-appropriate wear, surface patina, and minor marks
Leather case shows wear consistent with age
No cracks or major damage observed
Please review all photos carefully, as they are part of the description.
Keuffel & Esser slide rule, K&E slide rule, vintage slide rule, log log duplex, model 4097B, engineer slide rule, antique calculator, scientific instrument, STEM decor, math tool, engineering collectible, USA made slide rule, vintage math tool
| Category | Men > Other |
|---|---|
| Size | N/A |
| Brand | None |
| Condition | Good |
Gifts $25 - $50
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