the diameter of the world, reckoned by leonardo da vinci to be 7000 nautical renaissance miles (c. 1280 meter/mile), is reflected in the diameter and scale of the da vinci globe. central and north america, not yet discovered in 1504, are covered by a vast unknown atlantic ocean. an open trade route, the west passage, to the east is shown. this is the first globe upon which the names of countries such as brazil, germania, gallia, rusiae, anglia, scotia, armenia, judea, etc. appear engraved.