Attempt to make a tool with Napier's rodsple of a time span (7h 50min, nov 18, 2018 y – 20h 53min, jul 30, 2019 y)
Description:
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.Added to timeline:
Date:
7h 50min, nov 18, 2018 y
20h 53min, jul 30, 2019 y
~ 8 months