Model No:AEI-DN-SH15
The Dip Needle is a compass pivoted to move in the plane containing the magnetic field vector of the earth. It will then show the angle which the magnetic field makes with the vertical. The needle must be accurately balanced so that only magnetic torques is exerted on it.
Dip circles (also dip needles) are used to measure the angle between the horizon and the Earth's magnetic field (the dip angle). They were used in surveying, mining and prospecting as well as for the demonstration and study of magnetism.