Adjustable measuring scale structure for building

The invention relates to the field of measuring tools, in particular to an adjustable building measuring ruler structure which comprises a main ruler body, the interior of the main ruler body is of a hollow structure, and a side ruler body is installed in the main ruler body in a sliding mode; the telescopic mechanism is arranged between the main ruler body and the side ruler body, the telescopic mechanism comprises a rotation limiting assembly and a meshing transmission assembly, the rotation limiting assembly is connected with the meshing transmission assembly, and the rotation limiting assembly is matched with the meshing transmission assembly; the side ruler body can be driven to move towards the outside of the main ruler body in a stepping manner; the supporting assemblies are arranged in the length direction of the side ruler bodies, and when the side ruler bodies move towards the outside of the main ruler body, the supporting assemblies can act in sequence so as to support the side ruler bodies; the an