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bn:01228890n
Noun Concept
JA
風車電卓を
EN
A pinwheel calculator is a class of mechanical calculator described as early as 1685, and popular in the 19th and 20th century, calculating via wheels whose number of teeth were adjustable. Wikipedia
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Sources
IS A
機械式計算機
HAS KIND
EN
Odhner Arithmometer
Wikipedia Translations
JA
風車電卓を

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