Isn't that what gradians do? 360° = 400 gon, so 1 gon = 100 km of arc length https://en.wikipedia.org/wiki/Gradian#Relation_to_the_metre https://en.wikipedia.

Isn't that what gradians do? 360° = 400 gon, so 1 gon = 100 km of arc length https://en.wikipedia.org/wiki/Gradian#Relation_to_the_metre https://en.wikipedia.org/wiki/Gradian#Relation_to_the_metre