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Cylindrical slide rule (1 янв 1891 г. – 14 ч 49 мин, 1 июл 2019 г.)

Описание:

Edwin Thacher introduced a cylindrical slide rule in the United States.

Добавлено на ленту времени:

Counting/Caculating Inventions

4 ноя 2019

0

0

360

Дата:

1 янв 1891 г.

14 ч 49 мин, 1 июл 2019 г.

~ 128 years

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