Today the magnetic compass, which points in approximately the same direction, is used to set a course.
(the magnetic compass; points; in approximately the same direction) (the magnetic compass, which points in approximately the same direction; is used; to set a course; T:Today) (the magnetic compass, which points in approximately the same direction; to set; a course)
the magnetic compass the magnetic compass, which points in approximately the same direction the magnetic compass, which points in approximately the same direction
points is used to set
in approximately the same direction
to set a course T:Today
a course