This K E Slide Rule 4088-3 is a rare collectible item for engineering and science enthusiasts. Made in the United States, this slide rule features a stamped December 2008 edition and comes with a leather sheath. It is perfect for those interested in collectibles or for those who need a reliable slide rule for their engineering or medical practices. The slide rule is made by Keuffel Esser and is a valuable addition to any collection. It is ideal for use in engineering and medical practices, and its rarity makes it a sought-after item for collectors. Don't miss the opportunity to own this piece of history.