Magic brain' calculator. C.1955
Magic brain calculator in tin and plastic, with stylus and instructions
Magic Brain' calculator made by Chadwick in tin and plastic, with stylus and instructions. C.1955. Very similar to the Exaxctus and other stylus calculators of the period, the Magic Brain could add, subtact, and multiply and duivide by repeated addition and subtraction.
- Object Number:
- adding machines (stylus)
- Mrs G. Whiting
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