Luban Ruler - Lucky Ruler

LuBan Ruler is the first ever completed and applied set of rulers, which was coordinatedly researched and developed by Master Tam Nguyen and the Eastern Culture Research and Development Institute. The set is combined with 3 rulers, which are used for measuring and calculating the span/gap in items in constructions, ideally for applying fengshui to bring in money and blessing for the occupants.
The app is designed to run perfectly on mobile phones and tablets using iOS from 9.0
LuBan Ruler is ideal for those that are experts, practitioners, researchers in fengshui, as well as architects and carpenters to indicate the appropriate fengshui measurements for things. 
Features:
- The dimensions’ indication are based on LuBan Book 
- Allow users to test the dimensions on 3 types of ruler
- Measure the solid span in items used in the afterlife
- Measure the solid span in items used in the land of the living 
- Measure the gap inside 
- Compare and contrast with other fengshui measurements 
We hope you will be satisfied with this app.