Sinclair Cambridge Scientific Calculator

Vintage Sinclair Cambridge Scientific Calculator in Case and Box & Instructions

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

Sinclair Enterprise Programmable Calculator - BOXED - WORKING - Manuals + Power

Rare Sinclair Cambridge Programmable Calculator. Working - see description

Sinclair Cambridge Calculator With Original Case - Black Working 1970s Vintage

Vintage Sinclair Scientific Calculator w/ Case

VINTAGE OTIS KING CALCULATOR SLIDE RULE SCALE 414/423.