This vintage 11 inch slide rule from SP Precision is a valuable addition to any drafting or engineering collection. Made in the USA with high-quality plastic, this 11 inch slide rule boasts superior precision and accuracy. 

Its country of origin is the United States, and it is a non-modified item. The slide rule is perfect for collectors of science and medicine memorabilia, as well as those interested in the history of engineering. 

Good condition. 

Whether you're a collector or just looking for a functional tool, this slide rule is sure to....