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

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

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

Sinclair Cambridge Scientific Calculator

Vintage Bowmar MX100 SCIENTIFIC BRAIN Calculator with Case and Instructions

Facit 2202 Vintage Retro 1980s Japan Desktop Printing Adding Machine Calculator

Litronix 2210 Slide Rule Calculator with Soft Case

Otis King Calculator Model K No. A3157 Made In England