OTIS KING’S PATENT CYLINDER CALCULATOR MODEL K (S1786) ORIG BOX & INSTRUCTIONS

Fowler's double sided Long Scale Calculator with case

Vintage Addmaster Baby Pocket Calculator, Germany 1960s

1930's Fowlers Magnum Long Scale calculator in leather case

Brunsviga Model 20 mechanical pinwheel calculating machine, Serial Number 220661

Antique Mahogany 1921 Stanley Fuller Spiral Cylindrical Slide Rule Calculator

Fowler & Co. Manchester Patent Textile Mechanical Calculator Type E1. c1910.

vintage Phillip Harris Wheatstone bridge in case shown 3.5 kg