Lu Ban Ruler is a kind of ruler used in construction invented and invented by Lu Ban - the ancient Chinese carpenter ancestor. Not belonging to any measurement system in the world, the ruler has been drawn and tested for thousands of generations just to distinguish the two words good and bad. This type of ruler is used mostly in Duong Trach construction, measuring ventilation places such as windows, main doors, side doors, ventilation doors,... Accordingly, length or width, height or low cannot be arbitrarily built by themselves, but must strictly comply with the pre-defined auspicious size on the ruler. It is necessary to choose the length - width, horizontal - vertical in accordance with the position of the auspicious star, so that everything will be smooth and bring good luck.
So try using our Lu Ban Ruler app to get more information about size and feng shui.

* Feature
- Details
- Easy to use and take away benefits
- Lu Ban ruler measures the sand