Internal and external corner detection ruler for house building detection

The utility model belongs to the technical field of house building detection, in particular to an internal and external corner detection ruler for house building detection, which comprises two detection ruler main bodies, two auxiliary rulers I, a support shaft and two mounting blocks, and is characterized in that the two detection ruler main bodies are connected through the support shaft and are arranged front and back; the supporting shaft is fixedly installed on the detection ruler body located on the rear side, the supporting shaft is rotationally connected with the detection ruler body located on the front side, and the supporting shaft and the detection ruler body located on the front side are provided with the same angle indicating assembly. The internal and external corner detection ruler is reasonable in design and simple to operate, can improve the detection efficiency of internal and external corners, can avoid abnormal wear of the detection ruler main body during continuous detection, can realize