This K&E Keuffel & Esser 4088-3 Log Duplex Decitrig Slide Rule is a vintage collectible from the United States. It comes with a leather case for safekeeping. This engineering tool is perfect for those interested in science and mathematics, specifically in the field of slide rule calculations. The slide rule is in good working condition and will be a great addition to any collection. The case has notable wear but is still very much intact.

Please see pictures for details. If you have any questions please feel free to contact me.

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