This vintage slide rule from Lawrence Engineering Service is a unique find for collectors and enthusiasts alike. Made in the USA with wood construction, this slide rule is a testament to the precision and craftsmanship of engineering tools from the past. With a manufacturing time period of 1942 and originating from Peru, Indiana, this slide rule is a piece of American engineering history. The slide rule has not been modified and is in its original condition, providing a glimpse into the technology and techniques used in the field during that era. Add this rare slide rule to your collection or use it for everyday calculations.