A Stanley Fuller Calculator Circular Slide Rule Length of first 17 1/4 inches.
Fuller's Calculator or Cylindrical Slide Rule for sale at Pamono
Fuller calculator - Wikipedia
Fuller's Calculator or Cylindrical Slide Rule | Chairish
Fuller Calculator with Bakelite Fittings by Stanley for sale at Pamono
Vintage Fuller's Calculator, English, Scientific Instrument, Stanley of London at 1stDibs
A FULLER'S SPIRAL CYLINDRICAL SLIDE RULE CALCULATOR | History of Science and Technology, Including Fossils, Minerals and Meteorites | Books & Manuscripts | Sotheby's