This is the methods to determined the direction of a properties by using a simple compass , High-Tech gadgets or mobile phones and a chinese Luo Pan (compass) . Because sometimes the accuracy is depend on a person practice and understanding of Feng Shui and so do a lot of practice at your home , office and even business premises .
Firstly , stand in front of your main door .
Example : The picture below , the main door/entrance is facing NW .
Stand in between of the door and face outside . Use the compass to view it like this .
The green or the red arrow must be point to the North . So in this compass , it show of this properties it is SW (220 degrees) .
Lastly , to determined the direction of 220 degrees , SW it's (坤) ,(SW2) a Flying Star direction and in 8-Mansion Gua it is sitting NE and so it's Gua is 艮. So please don't be mistaken with it .