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Marca: Brunsviga
Modello: 13 RK
Nazione: Germany
Nome: Brunsviga
Brunsviga 13 RK, 1957, Germany

This calculator is based on the principle of the "wheel with moving teeth", invented by the Swedish WT Odhner in 1873; it has been the most used mechanism in mechanical calculation tools by many companies around the world. The small size made it a very suitable tool to be placed on a desk.