What is the difference between a compass and a compass?

1, the scope of action is different: the compass was first used for ritual, etiquette, military, and divination to determine the orientation when watching Feng Shui; Compass is a tool to indicate the direction, which is widely used in various directions, such as navigation, field exploration, urban road map reading and so on.

2. Different indication positions: the main component of the compass is the magnetic needle installed on the shaft, which can rotate freely under the action of natural geomagnetic field and keep in the tangent direction of magnetic meridian, and the south pole of the magnetic needle points to the geographical south pole; The north pole of the compass needle points to the geographical north pole, and the indicating direction can be distinguished by using this property.

3. Different methods of use: the earth is a big magnet, and the poles of the earth are close to the geographical south pole and the geographical north pole respectively. When the magnets on the earth's surface can rotate freely, they will indicate the north and south because of the nature that like magnets repel and opposite magnets attract. The basic function of compass is to use the earth's magnetic field to indicate the north direction. It must find the relative position with the map to know its position.