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Why
do some globes have a metal ring or semi-ring around
them?
Most
globes have a metal ring either full circle or half (semi)
circle. These are called MERIDIANS and they are generally
numbered in degrees from 0º at the equator to
90º at either Pole.
Originally, meridians were used to
help locate positions on the globe, but since globes
have the longitude and latitude lines on the maps, the
numbers on the meridian have become less important, but
the ring itself still serves to hold the globe ball in
position.
