The cosmolabe was an ancient astronomical instrument resembling the astrolabe, formerly used for measuring the angles between heavenly bodies. It is also called pantacosm. Jacques Besson also uses this name, or universal instrument, for his invention described in "Le cosmolabe" (1567), which could be used for astrometry, cartography, navigation, and surveying.
Le cosmolabe was published more than 9999 days ago.
It was published several hundred years ago and 9999 days is not even 20 years. It's difficult because I used 9999 days as the measurement.