Vintage Dietzgen Pat No. 2.543.314 National Slide Rule w/ Original Case

This vintage Dietzgen slide rule, with patent number 2.543.314, is a rare find for collectors of engineering memorabilia. The National Slide Rule comes with its original case, making it a perfect addition to any vintage collection. The slide rule is ideal for those interested in the history of engineering and medicine, and is a great conversation starter. Its unique design and functionality make it a valuable piece for anyone interested in collecting slide rules. Don't miss out on the opportunity to own a piece of history.