This vintage Pickett Slide Rule N902-ES is a must-have for collectors and enthusiasts of engineering and science memorabilia. Made in the United States, this slide rule comes with complete instructions and paperwork, and is a great addition to any collection. Whether you're a seasoned engineer or a collector of vintage science and medicine items, this slide rule is sure to impress. Its unique design and historical significance make it a valuable addition to any collection. Don't miss out on this opportunity to own a piece of American history.