[Product model]: H4-1
[Product size]: 8*3 * 1.7CM
[Product material]: acrylic, ABS
[Packaging method]: OPP packaging
[Packing information]: 1000 pieces per box
[Product color]: regular color is Army Green

Note: (If you need another color (as shown in the figure), you can customize the customer's color) please contact me, thank you!

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Compass refers to South geographical pole, that is, North Magnetic Pole compass is a simple instrument used to identify orientation.

The predecessor of the compass was Sinan, one of the the four ancient Chinese inventions.

The main component is a magnetic needle installed on the shaft that can rotate freely.

The magnetic needle can be kept in the tangential direction of the magnetic meridian under the action of the geomagnetic field.

The north pole of the magnetic needle points to the south pole of geography, which can be used to identify the direction.

Commonly used in navigation, Geodetic Survey, travel, military and other aspects.

The invention of Compass is the result of our working people's understanding of the magnetism of objects in long-term practice. Due to the production and labor, people came into contact with magnetite and began to understand the magnetic properties. People first discovered the properties of magnet iron. Later, the directivity of the magnet was discovered. After many experiments and researches,

Finally, a practical compass was invented.

Principle of compass indicating direction

The Earth is a large magnet whose south magnetic pole is near the geographic North Pole and North Magnetic Pole is near South geographical pole. The compass is forced by the magnetic field in the Earth's magnetic field.

Therefore, one end of the guide will point to the north.