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K&E Keuffel & Esser : DECI-LON #68 1100 Slide Rule with Leather Case (VG-EX) | eBay
New slide rule: K&E Deci-Lon 10 : Algorithms for the masses - julian m bucknall
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K&E Keuffel Esser Deci-Lon 5 No. 68 Slide Rule | Wyoming Estate Services LLC
Vintage KEUFFEL & ESSER "DECI-LON" SLIDE RULE #68-1130 c.1961 in LEATH – Get A Grip & More
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Used Keuffel & Esser K&E Deci Lon 5 pocket slide rule 68 1130 - UBB.threads | Slide rule, Old computers, Cool slides
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K&E Keuffel & Esser Deci-lon 10" Slide Rule and 25 similar items
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Vintage KEUFFEL & ESSER "DECI-LON" SLIDE RULE #68-1100 c.1961 in LEATH – Get A Grip & More
