How many inches is one foot of Luban ruler? How many minutes is an inch? Approximately how many centimeters is a foot today?

According to ancient books, "Luban ruler has a curved ruler of four inches and four points. There are eight inches between the rulers. One inch is a straight ruler and one inch and eight points." "Curved ruler" is the carpentry ruler used by ancient wood craftsmen. Its length is the same as the construction ruler issued by the Ministry of Industry of the previous dynasties.

Because the ruler made during the Ming and Qing Dynasties was 32 centimeters long, the length of the Luban ruler is 46.08 centimeters, and each inch of the Luban ruler is 5.76 centimeters. 1 foot = 10 inches, 1 inch = 10 minutes (1 foot = 33.33 centimeters, 1 inch = 3.333 centimeters)

One foot can be divided into eight inches, and the entire length of the foot is 46.08 centimeters. Each inch is divided equally. It is 5.76 centimeters, one inch is wealth, two inches is disease, three inches is separation, four inches is justice, five inches is official, six inches is calamity, seven inches is harm, eight inches is basis, and the arrangement is repeated in this order.

Extended information:

It is said that the Luban ruler was made by Gongshuban of the State 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.

The Luban ruler was integrated with the Dinglan ruler soon after its creation, and later with the 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.

Luban has many inventions and creations. Many ancient books record that many woodworking tools used by carpenters were invented by him.

Like the curved ruler used by carpenters, it is called Luban ruler. Another example is the ink fountain, umbrella, saw, plane, drill, etc. It is said that Lu Ban invented it.

The invention of these woodworking tools freed the craftsmen at that time from primitive and heavy labor, doubled their labor efficiency, and gave civil engineering a new look.

It all contains original physical science knowledge.

Reference: Baidu Encyclopedia - Luban Ruler