Attempt to make a tool with Napier's rodsple of a time span (7 h 50 m, 18 nov 2018 ano – 20 h 53 m, 30 jul 2019 ano)

Descrição:

In the early 1650s, Pierre Petit , a King Counsellor and Intendant des Fortifications made an attempt to make a tool with Napier's rods. Petit placed paper strips with Napier's rods and made a mechanism, the so called Arithmetical Cylinder or Tambour de Petit allowing the paper strips to be moved along the axes.

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