Vintage Keuffel & Esser Co. slide rule in case $5.99 USD Sold on: 2014-Oct-17 Marketplace: eBay 1 Treasure 0 Trash 100% Detail: Vintage Keuffel & Esser Co., N.Y. slide rule in case A VERY COOL ITEM THAT I DO NOT KNOW HOW TO USE!!!!!! THANKS FOR LOOKING.......CHECK OUT OUR OTHER ITEMS...... HAPPY TO COMBINE SHIPPING!!!!! FE... More Relevance Historical Items
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