What's the difference between the sizes of compasses?

Compasses are divided into three types, six types and comprehensive types. Every dish is different, and the compasses used by different sects are different. Some feng shui masters bring two compasses because the magnetic needle of the compass is very sensitive, so it will be more secure to bring two. Compass is the main tool of feng shui master. Without it, you can't see Feng Shui, let alone judge good or bad luck. Large compasses are more accurate and small compasses are easy to carry.