NOB Nestler Elemath RS 17 Scales Slide Rule. It includes the slide rule, the plastic two part case, a 6 page foldout with instructions in German and two r(rare packing error) care instructions. For actual scales, please see photos. The item "NOB Slide Rule Elemath RS Duplex 17 Scales Unused" is in sale since Monday, July 6, 2020. This item is in the category "Collectables\Scientific Collectables\Engineering & Surveying".The seller is "charisa_hanna" and is located in Oradea. This item can be shipped to North, South, or Latin America, European Union member countries.