Pickett Slide Rule Set (N-500 ES and N-300 ES) $21.50 USD Sold on: 2012-Dec-04 Marketplace: eBay 4 Treasure 0 Trash 100% Detail: Pickett & Eckel Inc. N-500 ES and N-300 ES Slide Rules. Both items are in excellent condition and both come with its own Suede Leather case. Made in the USA Biography: Printer Roswell Colvert Pick... More Relevance Historical Items
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