Antique Slide Rule Keuffel & Esser University Of Maine Mechanical Slide Rule
$17.50 USDSold on: 2013-Sep-01
Marketplace: eBay
Detail:
Antique wooden slide rule made by Keuffler and Esser Co. of New York. Patent 1,934,232. I'm told these are from the 1930s and I believe the 38 reference on the leather case refers to the individual's ... | Item Name | | Sold Price |
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