Product code: Vintage Keuffel & Esser (K&E) good 4081-5 Slide Rule 20-inch Mahogany Copyright 1947
Keuffel & Esser (K&E) 4081-5 Log Log Decitrig Duplex good 20-inch Mahogany Slide Rule Copyright 1947 Bottom of leather case has slitx Slide rule slider has chips (see photos) Booklet has cracked slit at the foldef back cover Box has cracks and one end of box is missing. Metal ends are slightly tarnished with age.
Keuffel & Esser (K&E) 4081-5 Log Log Decitrig Duplex good 20-inch Mahogany Slide Rule Copyright 1947 Bottom of leather case has slitx Slide rule slider has chips (see photos) Booklet has cracked slit at the foldef back cover Box has cracks and one end of box is missing. Metal ends are slightly tarnished with age.