This vintage Gilson Circular Midget Slide Rule is a true gem for any collector. It was copyrighted in 1919 and patented in 1922, and was proudly made in the USA. The slide rule is in great working condition, with all the numbers and lines clear and visible.

The slide rule is a true piece of engineering history, and will make a great addition to any collection. Its country/region of manufacture is the United States, and it has not been modified. The slide rule is perfect for science and medicine enthusiasts, as well as anyone interested in the history of engineering.

SB7-SR1