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Keuffel & Esser 4092-3 log log duplex slide rule (1926). Made in USA, w/sheath
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Keuffel & Esser 4092-3 log log duplex slide rule (1926). Made in USA, w/sheath

Starting price (see what it sold for on eBay ↗) $24.99 as of Jul 20, 2026
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Ships from ZIP 913**
soundthinking 5,597 ratings · 100.00% positive
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Description

From the seller
K&E 4092-3 Log Log Duplex sn100651 (1926) slide rule. Leather case is missing the flap but is intact. Back Scale: K, DF [ CF,CIF,CI, C ] D, L.

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