The VTG Keuffel Esser Slide Rule 4081-3 is a vintage engineering tool from the United States, known for its precision and durability. With a log-log duplex decitrig function, this slide rule is a valuable collector's item for those interested in the history of science and engineering. The leather case adds a touch of elegance and protection to this classic piece of American craftsmanship. Made by a reputable company known for producing high-quality slide rules, this item is a testament to the craftsmanship and attention to detail of yesteryears.

Please note the previous owners name scrubbed on the leather case.