Vntg 1960's KEUFFEL & ESSER K+E DECI-LON Slide Rule 68-1100 Case Manual

This vintage 1960's KEUFFEL & ESSER K+E DECI-LON Slide Rule 68-1100 comes with a leather case and original manual. It is a great addition to any collection of slide rules, engineering equipment, or science & medicine memorabilia. The slide rule is in good working order and has been well-maintained over the years. It is a featured refinement of K&E Slide Rule Leather Case w Original Manual, making it a unique and valuable item. (Note: inside flap has owner's name) #vintage #collectables #math #engineering