K&E Keffel & Essel engineering slide rule + case 1947 4181-1

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Pricing & History
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WONDERFUL VINTAGE 1947 K&E KEFFEL & ESSER ENGINEERING SLIDE RULE, IN ORIGINAL CASE. CASE HAS ORIGINAL OWNER'S NAME + INFO ON THE INSIDE--SEE PICS. JUST STUNNING IN PERSON! YOU WILL NOT BE DISAPPOINTED! MARKED KEFFEL & ESSER COPYRIGHT 1947 4181-1 371570 570. MEASURING 7.5" X 2" CASE APPROX. WEIGHS 3 OZ. SHIPPING INCLUDES FIRST CLASS, INSURANCE AND TRACKING. (DD031622B)
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