Vintage Fuller's Spiral Slide Rule Calculator Stanley in box case - Circa 1920

Vintage Fuller's Spiral Slide Rule or Calculator by John Davis with Case c1944

Vintage Cased Stanley Fuller Model No 1 Logarithmic Calculator

Vintage ENBEECO Prismatic Compass NEWBOLD & BULFORD Military Marching c.1975

ANTIQUE BREWER'S SLIDE RULE

Antique anemometer - measuring ventilation in mines Davis & Son, Derby (mining)

Vtg Otis King's Patent Cylinder Calculator Slide Rule Model L & Box Carbic 1960s

VINTAGE OTIS KING CALCULATOR SLIDE RULE SCALE 414/423.