The correct total length of' Lubanchi' is exactly 32. Cm (between 5 mm), a construction ruler (i.e., carpenter's ruler is calculated as 1 ruler) takes 5 feet as a step. In the process of construction method, the value of the last step is the method of' not doing all steps', and only 4.5 feet is taken as the construction rule, instead of all steps being calculated as 4.5 feet. There is one such ruler in the Shanghai Museum, and the' China Wan 'an Feng Shui Ruler' is also copied from this original size. This is the legendary folk ruler, also known as' Lubanchi'.
Lubanchi in other formats is a myth. And' Lu Banchi' describes a simple exposition of using a ruler to open light, suppress evil spirits and ward off evil spirits, and can only be played as a handicraft. Don't take it seriously, or it will backfire! No matter whether the length of' Lu Banchi' is 42, 43, 45, 46, 50 or 52 cm, just look at its total length of one foot to understand whether it is practical or not.