The North magnetic pole is at a point where a dipping compass--a compass that allows the needle to move freely in a vertical plane (as opposed to the horizontal needle movements seen in most compasses)--points straight down into the earth.
(The North magnetic pole; is; at a point) (the horizontal needle movements; seen; L:in most compasses) (a compass; allows; the needle to move freely in a vertical plane) Context(a compass allows,List([63, 84))):(the needle; to move freely; L:in a vertical plane)
a compass allows,List([63, 84))
The North magnetic pole the horizontal needle movements a compass the needle
is seen allows to move freely
at a point
L:in most compasses
the needle to move freely in a vertical plane
L:in a vertical plane