In the middle and lower reaches, the relevant scales specially used to measure the Yin House are: "Ding, Harm, Prosperity, Suffering, Righteousness, Official, Death, Prosperity, Loss and Wealth", and each word has four items, each of which is listed with the words "Financial virtue, justice, no heirs, disaster arrival and mouth", so as to avoid measuring the length by ominous signs when building the Yin House.
Lu half a foot said:
Lu Banchi, also known as "Lu Banchi" and "Lu Banchi", is a measuring tool used in building houses, similar to the ruler used by craftsmen today. Lu half a foot is about 46.08 cm long. It is said that it was written by Lu Ban, the Duke of Lu in the Spring and Autumn Period. Later, it was added to the geomantic circle to measure the good and bad luck of houses and houses, which was called "door plan".
Also known as "square", it is mainly used to check whether the planed plates, purlins and structures are vertical and whether the edges are at right angles to each other. 1 city ruler =0.8 half a foot. Soon after, Lubanchi appeared, Ding Lan ruler was integrated, and then inches and centimeters were integrated. It is an important tool for measurement and calibration. Because of its special function, it is most widely displayed in geomantic culture and architectural culture.