Vintage K&E Deci-lon 10 SLIDE RULE 68 1100 w/case

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**************************************************** De Tails: KEUFFEL & ESSER Engineer and Science Rule This is a very nice K&E Deci Lon 10 68 1100 slide rule with a dark orange leather case. Exclusive shatterproof synthetic celluloid construction. Grip lines do not appear on this as it was the final production model. Owners name neatly written inside the case flap. (Edited 11/03/06) The text listing states the the slide rule does not have grip lines as it is the last production model. Yet the Deci-Lon pictured does have grip lines, and the case is not the later downgraded leather case usually seen with the last production model. The photos are accurate for this listing. We appologize for the written misinformation. Material: Celluloid rule, leather case Size: 12 1/2"+ long, 2"wide Color: White with dark orange case Markings: On rule: U.S. Pat's 2,422,649 On case: 2,000,337 Front scales are: Sq1, Sq2, DF, CF, ClF , L, Cl, C, D, Ln0, Ln1, Ln2, Ln3 Reverse scales are: Ln-3, Ln-2, Ln-1, Ln-0, A, B, T, SRT, S, C, D, Dl and K Condition: good used, t's a lot of wear left in this coat Shipping Weight: 1 lb. 3 oz. ************************************************************************ Save on shipping by winning multiple auctions - Check out my other items ! ************************************************************ read more