| Country of Origin | United States |
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Check the listing for details. K&E 4081-3S Log Log Duplex Decitrig Slide Rule w/ Leather Case & Box Vtg 1950. Condition: Used, Made in United States. Listed at 24.95 USD. • Model: 4081-3S Log Log Duplex Decitrig. Made in the U.S.A., this precision slide rule was among the most advanced of its era, featuring a durable construction with smooth slide action and clear markings.