KE Keuffel & Esser Slide Rule 4083-3 Log Log Duplex Vector 1947 Case $25.09 USD Sold on: 2012-Aug-20 Marketplace: eBay 5 Treasure 0 Trash 100% Detail: KE Keuffel & Esser Slide Rule copyright 1947 with case. The leather case has some wear at end and the slide rule is in good condition. This is a 4083-3 log log duplex vector and is about 12.25 inc... More Relevance Historical Items
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