Vintage Keuffel & Esser 4081-3 slide rule with brown leather case

The Vintage Keuffel & Esser 4081-3 slide rule is a sought-after collectible tool for engineering and mathematical enthusiasts. This high-quality slide rule, crafted by the renowned firm Keuffel & Esser, comes with a stylish brown leather case for safe storage and transport. Perfect for those interested in vintage technology and scientific tools, this slide rule is a rare find that combines functionality with a classic design. Ideal for both collectors and professionals in the field of engineering, this piece is a valuable addition to any collection. Used by my dad in Bronx, high school of science and engineering school . Amazing shape, slides perfect, and has original box