The margins were equally divided into degrees of a great circle of the sphere, These were, actually lengths of arcs of the meridian, then reckoned as seventeen and a half leagues.
Udini belusahlulwa ngokulinganayo ngokwamanqanaba esangqa esikhulu sengqukumba ezibubude nkqu beAkhi zeMeridiyani eziqatshelwa ngokuba ziiligi ezilishumi elinesixhenxe.