The Lu Ban ruler is a ruler used to measure and measure in the construction of Duong Trach (houses) and Am Trach (graves), on the Lu Ban ruler there are common geographical dimensions and arcs to help determine good or bad intervals. bad, helping users know what size is good to use and what size is bad to avoid.

Eastern people respect their beliefs, always have the concept of "abstinence is good" so in anything, they are carefully considered. From marrying and marrying, you also have to look at age, see the date to build a house in the right direction, age, date and time, ... This has been deeply ingrained in the subconscious of Eastern people and Vietnamese people are one of them. there.

According to this belief, from ancient times until now, when building a house, any Vietnamese always want to choose for themselves beautiful, feng shui-friendly sizes to use for doors, altars, kitchens and other items in the house. The house is so that it brings a lot of fortune, banishes evil spirits, and neutralizes bad luck. To do that, the commonly used tool is the Lu Ban ruler.

* Feature
- Convenient, easy to use, easy to carry
- Ruler for holes
- Exact length