Faber Castell 111/54A Darmstadt, Slide Rule w. Addiator

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You are bidding on a: Faber Castell 111/54 A Darmstadt, Slide Rule with an Addiator at its back. The slide rule is factory new. I t has never been used and it is in excellent condition!No scratches, damages or something else!With a slide rule you can do many complex calculations, but you cannotdo simple operations such as adding and subtracting.As a compensation of this lack of abilities, some slide rules were equipedwith an Addiator. (For more details about Addiators see the Internet) The plastic Slide Rule is 12 inch long and comes with: -original german instruction (so far as I know, an english instruction has never been available)-additional german instruction for the Addiator -green leather-like-case with a zipper -operating pen for the AddiatorFor more details see the photos.Please notice, the leather-like-case is printed with the model-number111/22A, not 111/54A, but nevertheless, this was the original state!( See Picture)Feel free to ask questions to me. Shipping costs to USA/Canada and outside Europe 18 US $ by registered letter (by air).