What are the types of geomantic compass?

Because the compass has a long historical development process, the compass has many styles from simple to complex. Also, there are different kinds of compasses because of the different schools of Feng Shui and masters. As far as types are concerned, there are three kinds of discs after Ming and Qing Dynasties: triple disc, triple disc and comprehensive disc. Compasses of the same kind are slightly different because of different biographies of Feng Shui masters and different places of origin. The author alone has collected more than 20 kinds of compasses with different styles, and the circle and content of compasses vary with their size. The same compass, due to different sizes, has different circle contents. Different schools and places of origin will be different. For example, the Hui Pan made in Anhui is different from the Jian Pan made in Fujian, and the triad made in Hong Kong and Taiwan is different from the compass made in mainland China. As far as producing areas are concerned, there are Xiuning in Anhui, Xingning in Guangdong, Ganzhou in Jiangxi, Zhangzhou in Fujian, Hangzhou in Zhejiang and Wenzhou in Zhejiang. Since modern times, geomantic compasses have also been produced in Hebei, Taiwan Province, Hongkong, Malaysia and Japan. The warp-making workshop of Laowu Lu Heng Store, located in Wan Qiao 'an, Xiuning, Anhui Province, has been making compasses for nearly 300 years, and has always maintained the tradition of manual production with high precision. In modern times, the quality and accuracy of mechanical copper compasses made in Hong Kong and Taiwan are relatively high. The famous firms include Tongsheng, Han Hui, Ding Dong and Xuanxuetong (a compass with more accurate precision and complete software, which is suitable for modern geomantic omen).