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Modern Slide rule (14h 39min, nov 21, 2018 y – 14h 49min, jul 1, 2019 y)

Description:

The Reverend William Oughtred and others developed the slide rule in the 17th century based on the work on logarithms by John Napier.

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Counting/Caculating Inventions

4 Nov 2019

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360

Date:

14h 39min, nov 21, 2018 y

14h 49min, jul 1, 2019 y

~ 7 months

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