1946 Fuller Stanley Cylindrical Slide Rule Calculator. Bakelite In Mahogany Box.

Vintage Fowler 12-10 calculator/circular slide rule, original leather case

Fowler’s Universal calculator, In Original Leather Case & Long Scale Calculator

ANTIQUE BREWER'S SLIDE RULE

Lot of Vintage Antique Brass and iron Scale Balance Weights

NEW. Build the most BEAUTIFUL solar system ORRERY kit by TECHING

Fowler's Long Scale Calculator Circular Slide Rule Leather Case Instructions

ANTIQUE VINTAGE RARE GALVANOMETER , chipped glass