Gibson Binary Slide Rule 8″ Diameter Circular Slide Rule

Gibson Binary Slide Rule 8 inches, 21.1cm diameter. Made in USA.

  • Gilson Slide Rule Co., Stuart, Florida
  • Front Scales
  • C,CI,A,K,Log,LL1,LL2,LL3,LL4,Binary, Fraction,Drill,Thread, Millimeter
  • Back Scales
  • Degrees, S, T, Degrees, S, T, Degrees, S, T, Fractions