Are feng shui compasses square and round? Only discs are not allowed? And what brand of compass is everyone using?

Nowadays, professional geomantic compass is a square with a circle inside. Technically, the outer square disk is a disk, and the disk can rotate. There is a red cross on the square disk. Used for orientation.

In ancient times, compasses only had disks. Why can't you tell? The main reason is that there is no meridian. I usually pull one myself, and even my hand won't notice that it's crooked.

I have been using Jiyitang's compass, and I used Jinyutang's before. Now a few friends and I are using plates from Jiyitang. Good quality, accuracy and high cost performance. Every time they buy a compass, they give them some practical gadgets. I suggest you also have a look.

Taobao or Baidu search for medical clinic.