Vintage Dietzgen No. 1767 Maniphase Slide Rule Manual Case Made in USA

Vintage Dietzgen No. 1767 Maniphase slide rule featuring white precision scales, black end pieces, and a clear sliding cursor. Marked National, Made in U.S.A., and Dietzgen No. 1767.  Includes the Dietzgen Maniphase Slide Rule instruction manual and tan protective case. A great piece of pre-calculator technology for collectors of vintage scientific instruments, engineering tools, drafting equipment, mathematics memorabilia, or mid-century educational items.  Brand: Dietzgen Model: No. 1767 Maniphase Made In: USA Color: White / Black Includes: Slide Rule, Instruction Manual & Protective Case  Features: • Vintage Dietzgen scientific slide rule • No. 1767 Maniphase model • Clear sliding cursor • Multiple precision calculation scales • Original instruction manual • Tan protective case • Made in USA • Vintage engineering and mathematical instrument  Condition: Good pre-owned vintage condition with age and use-related wear. The protective case shows visible wear and discoloration. Manual shows age-related wear. Please review all photos carefully for complete condition details.  Reasonable offers are welcome and will be considered.  dietzgen slide rule dietzgen 1767 maniphase slide rule vintage slide rule engineering slide rule scientific instrument vintage calculator engineering collectible math collectible drafting tool made in usa vintage engineering tool mid century scientific pre calculator  BNr10