Pre-owned in great condition.  The leather case has some light scuffing and a name written on the outside with his initials on the outside.  SEE PHOTOS

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The Keuffel & Esser K&E Log Log Duplex Decitrig Slide Rule 4081-3 is a high-quality engineering tool made in the United States. This slide rule comes in its original leather case, preserving its vintage charm while ensuring its durability. With its precise measurements and intricate design, this collectible piece is perfect for enthusiasts of science, engineering, and mathematics. It is a rare and valuable find for those interested in the history of mathematical tools and instruments.