Meaning of dip needle

dip' nee"dle

Pronunciation: [key]
  1. an early form of magnetometer, consisting of a magnetic needle pivoted through its center of gravity and having its axis through the vertical plane of the earth's magnetic meridian so as to point in the direction of maximum magnetic intensity. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.