What are the collection channels of compasses?

Through online procurement, second-hand market, antique market collection.

All kinds of compasses are popular in today's market, and they are very easy to obtain through various channels such as online procurement, second-hand market and antique market.

Compass is the result of China ancient working people's understanding of magnet magnetism in long-term practice. As one of four great inventions of ancient china, its invention has played an inestimable role in the development of human science, technology and civilization. In ancient China, the compass was first used for rituals, etiquette, military affairs and divination, and to determine the orientation when looking at geomantic omen.