Multifunctional standard ruler for quality detection of house building engineering

The utility model belongs to the technical field of house quality detection, and relates to a multifunctional standard ruler for house construction engineering quality detection, which comprises a main ruler, the bottom of the main ruler is provided with a first groove, the opposite inner walls of the first groove are fixedly connected with a same movable shaft, the movable shaft is movably connected with a first auxiliary ruler, and the first auxiliary ruler is provided with a second groove. A first clamping groove is formed in one end of the first auxiliary ruler, and a second groove is formed in the inner wall of the first clamping groove. The multifunctional standard ruler has the beneficial effects that the clamping assembly, the second auxiliary ruler and the second clamping groove are arranged, the clamping assembly is separated from the second clamping groove by adjusting the clamping assembly, the second auxiliary ruler moves in a third groove by moving the second auxiliary ruler, and a clamping bloc