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 inclinometer .
DIP NEEDLE
Meaning of DIP NEEDLE in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012