Perhaps a long time ago, the hole ruler was used by our ancestors in building houses and making doors according to feng shui with the desire to pray for good fortune for the family. To be able to competently determine the “golden parameters” in house construction, our ancestors in the past often used a hole ruler. It is understandable that building a house or repairing objects can bring more fortune to your family, so obviously you cannot ignore memorizing how to use a hole ruler. This is considered the quintessence for masters of carpentry and construction in the vast country of China thousands of years BC.

What is a hole ruler?

The Lu Ban ruler is a type of ruler specifically used to measure when building houses and graves to suit feng shui. On the ruler, the measurement parameters are divided and the arcs are marked to help distinguish between good and bad ranges so that the worker can choose a beautiful design or know which distances are bad and should be avoided according to feng shui concepts.

According to this concept, since ancient times, when building a house in Vietnam, anyone in Vietnam wants to choose a beautiful size, suitable for the door, altar, kitchen and other items according to feng shui in the family. . They wish to bring fortune into their homes, ward off evil, and ward off bad luck. For this, the commonly used tool is a ruler.

Structure of board hole ruler in house construction

1. About the structure of the hole ruler

When you pull out the ruler, you will immediately see 4 carefully divided rows of rulers with different meanings. – The first line is the size (cm), the fourth line is in Inches. – The second line is a series of letters – The third line is also a sequence of words. The second and third rows include two rulers, measuring 38.8 cm and 42.9 cm respectively.

2. About the length of the hole ruler

Both small rulers (38.8 cm and 42.9 cm) are stacked on top of each other. The way to use this small Lu Ban ruler is to measure until the size falls into the 2 red arcs which is good, conversely when the size falls into the black arc it means bad. The remaining Lu Ban ruler is the 52.2 cm type, which according to tradition, is effective in measuring dimensions for household ventilation spaces. It could be the clearance of the main door, door, window or opening,…

In addition, the 52.2 cm Lu Ban ruler is also used to determine the size of the interior spaces of rooms. The hole ruler has 4 rows as follows: Row 1: Board hole size in cm Row 2: Arcs according to the original hole ruler 38.8cm Row 3: Arcs according to the original hole ruler 42.9cm Row 4: The top row is the measurements according to people’s own rulers in Taiwan, Fujian and Hong Kong.

Accordingly, rows 2 and 3 have symbols of black arc (bad) and red arc (good). Therefore, when conducting construction measurements, you should choose the size of the red hole and avoid the size of the black hole. In addition, currently there is also a 52.2cm ruler for clear spaces such as main doors, windows, etc. and interior spaces of rooms. Therefore you can choose the most suitable one.

Meaning of hole ruler

Lu ban rulers are used in building houses, graves or measuring designs to ensure feng shui. Currently, many architects use feng shui numbers to meet the needs of interior construction, architecture, etc. to bring a good life to the homeowner. Depending on the type of horoscope, the hole ruler will have different applications such as: – Lu ban duong trach ruler in house construction: Making gates, measuring the size of ban ban doors, length, height, width of houses,… – Ban am trach hole ruler in tomb construction: Measure height x length x width as well as the location of the tomb,… – Carpenter’s hole ruler: home interior design.

How to use a ruler

– Measure the ventilation size: Measure the ventilation size of the door frame, not the door. The size of the door opening is calculated from the inside edge of the door and should measure both height and width. – Measuring solid dimensions: To measure the height of the house, you should measure from the lower floor level to the upper floor level, including the layer close to the floor. If you measure beds, tables, chairs, doors, wardrobes, etc., you should measure the length, width, and height. After measuring the solid size, you should choose a good size from the 4 good palaces: Cung Tai – Nghia – Quan – Ban. There are 2 types of solid sizes as follows: House detailed ruler with length of each sector is 53.62mm The interior ruler has a length of each arc of 48.75mm Sound size: Similar measurement to solid size