Category:Rema calculators

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Media in category "Rema calculators"

The following 2 files are in this category, out of 2 total.

1926-Rema-maquina-de-calcular.jpg 565 × 187; 23 KB
Rema I calculator - Ridai Museum of Modern Science, Tokyo - DSC07654.JPG 5,192 × 3,297; 7.38 MB

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Mechanical calculators