How do you read a feng shui ruler ? It seem that there are 2 section: up and down. And most of the time, it did not agree with one or the other; meaning that one may state is good but the other state is bad, so which one do we use to determine the correct measure ?
The top markings are for measuring the living e.g. door size, cabinets etc.. (yang). The bottom markings are for the dead (yin) e.g. measuring size of tombstones etc.
Center for Feng Shui Research