Luban ruler Jishu door sizes include: 21-23cm, 40-42cm, 60-62cm, 81cm, 88cm, 89cm, 106-108cm, 126-128cm, 133cm, 146cm, 155cm, 171-176cm , 191-198cm, 211-216cm, 231-236cm, 241cm, 253-256cm.
1. One inch (3.2 cm) is the "wealth" in Luban ruler.
2. Six inches (19.2 cm) is "righteousness".
3. One foot and six inches (51.2 cm) is "wealth".
4. Two feet and one inch (67.2 cm) is "righteousness".
5. Two feet and eight inches (89.6 cm) is "auspicious".
6. Three feet and six inches (115.2 cm) is "righteousness".
7. Five feet and six inches (179.2 cm) is "auspicious".
8. Seven feet and one inch (227.2 cm) is "auspicious".
9. Seven feet and eight inches (249.6 cm) is "righteousness".
The function of Luban ruler:
Luban ruler, the full name of "Luban construction ruler", also known as "Luban ruler", is a measuring tool used in building houses, similar to that used by craftsmen today. of curved ruler. The Luban ruler is about 46.08 centimeters long. According to legend, it was made by Lu Ban, the Duke of Lu in the Spring and Autumn Period. Later, the eight characters were added through the Feng Shui community to measure the good and bad luck of the house, and it was called the "door meter ruler".
Also known as "square ruler", it is a woodworking tool mainly used to check whether the planed boards, planks and structures are vertical and at right angles to the edges. 1 city ruler = 0.8 Luban ruler. Luban ruler was integrated with Dinglan ruler soon after its creation, and later with inches and centimeters. It is an important tool for measurement and correction. Due to its special functions, it is most widely expressed in Feng Shui culture and architectural culture.