Vintage Wooden Lawrence Slide Rule with Case

Vintage Wooden Lawrence Slide Rule. 10 1/2' X 1. Original case is included. Lawrence Engineering Service, Peru, Indiana. Made in the U.S.A.Developed in 17th century for evaluating mathematical operations. Popular in the 1950s and 1960s. In the U.S.A. colloquially called a slipstick.Slide Rule belonged to my father. It appears to have never been used. Aside from slight signs of age, both Slide Rule and case are in excellent condition.Will bundle with other items. Smoke free home. Feel free to contact me with questions/offers. Mail weekdays. cancellations Not Accepted. flawless for everyday use. excellent materials and excellent craftsmanship ensure long-lasting durability.