Vibration magnan magnetometer is placed at the south pole in the time period will be
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Deflection magnetometer, box-type vibration magnetometer, timer, bar magnet.The deflection magnetometer consists of a large compass box with a small magnetic needle pivoted at the center of a circular scale so that the needle is free to rotate in a horizontal plane .
A large aluminium pointer is rigidly fixed perpendicular to the magnetic needle. The circular scale is graduated in degrees. (0-0) and (90-90) readings are marked at the ends of two perpendicular diameters. The compass box is placed at the center of a wooden board one meter long. The wooden board has a millimeter scale along its axis. The zero of this scale is at the center of the compass box.
The box-type vibration magnetometer consists of a rectangular box with glass sides. A vertical tube is fitted at the top and a torsion-free fiber is suspended from the top of this tube carries a light aluminum stirrup in the box below. The bar magnet can be placed horizontally in this stirrup. At the bottom of the box two leveling screws are provided .