The carpenter using a ruler， also known as the "square"， mainly used tocheck the planing plate after， lumber and structure is vertical and edgeinto woodworking tools right. A measuring tool with religious color， by theLuban rule， but usually not measure length. The length of rule of no

Fixed， generally more than "chi". The scale is divided into eight lattice，each part is also divided into several compartments， respectively， writegood words， similar content， specifications are not unified. Build houses and making furniture， from whole to every part of the high and low， width，length， to use this scale， the scale and Geely relevant agreement， to avoid fierce and disaster related scale， to pray for peace auspiciouspsychology. From the standard language of the content， clear learningassociated with the old astrology.

Carpenter's Square， also for "鲁般 ruler"， measuring tool used for the construction of housing， the kind of this artisan square. It from left to right is divided into four rows， respectively is the traditional "， Lu Banchi，Ding LAN feet， CM four scale. Carpenter's square about 42.9 centimeters long， according to legend as the spring and autumn Lupublic class， after the Feng Shui circles to join the eight words， tomeasure the house of good and bad， and called the "door meter". Theeight words are: "wealth"， "disease"， "from"， "righteousness"， "official""robbery"， "harm"， "this"， in every word underneath， and divided into foursmall print， to distinguish between good and bad sense. Carpenter's Square， also known as walker， anonymous book， origin unknown. Like allhiking， walking in the Yunnan Sichuan mountainous area all the year round. In recent years， people have seen him in Bita Lake in Northwest Yunnan Shangri-La Island， this person is a dark middle-aged man. There is a temple on the island of the karma Kagyu faction. Carpenter's Square， riddle.