K&E Keuffel & Esser 4080-3 Log Log Duplex Decitrig Slide Rule w/ Leather Case
4.6 (145 items)
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Product details
| Management number | 37506072 | Release Date | 2026/01/12 | List Price | $18.00 | Model Number | 37506072 | ||
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| Category | |||||||||
This Keuffel & Esser Log Log Duplex Decitrig slide rule (model 4080-3) includes the original leather case with flap closure. The rule features multiple advanced scales including LL0–LL3, DF, CF, ST, S, T, and D, with the cursor operating smoothly across the rule.
Wear includes age toning, small stains, and marks on the rule surface, while the leather case has significant cracking, flaking, and edge wear from long-term storage and handling.
Known as one of K&E’s most popular high-end professional slide rules, the 4080-3 was widely used by engineers and technical professionals for precise logarithmic and trigonometric calculations.
The rule’s duplex design and advanced scale set offer strong collector appeal, especially when paired with an original case.
Condition: Overall condition is fair, with the noted wear described above.
Sold as is. As always, open to offers.
| Category | Vintage & collectibles > Other |
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| Size | N/A |
| Brand | None |
| Condition | Good |
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