By A Mystery Man Writer
The MagicBrain Calculator was manufactured in 1955 by the Chadwick Company, this early calculator was operated using a stylus, and could perform addition, subtraction and multiplication calculation
Magic Brain Calculator-original Pocket Math Device-1960s-made in
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File:Vintage Magic Brain Mechanical Pocket Calculator, Made in
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Vintage 1960s MAGIC BRAIN Pocket Mechanical Addiator
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