How to choose a Feng Shui compass? Is it possible to provide pictures?

There are several key points when choosing a compass: 1. The central Tianchi must be accurate 2. The outer disk must be square 3. The four sides must be flat and not curved 4. The compass must be flat and unchanged 5. The inner disk must be flexible in rotation 6. The gap between the inner and outer disks must be small 7. The font on the board should be clear. 8. The content on the board should not be loose. 9. The size should be suitable. 10. The meridian red line should be tight. I saw this on a Taobao store called Jiyitang before. . This compass is really good. . Because my level is not high enough, otherwise I can send you a few pictures of the compass I just bought for your reference. . You can go shopping in this Taobao store. . You should be able to find it by searching for Jiyitang Fengshui Compass~