Vertical ruler for building construction

The utility model discloses a vertical ruler for building construction, which comprises a ruler body, wherein a vertical weight capable of swinging according to the verticality of the vertical surface is arranged at the bottom inside the ruler body, a controlled pointer is connected with the top of the vertical weight, a dial gauge is arranged at the upper part of the ruler body, the controlled pointer can swing along the swinging of the vertical weight and can point to scales of the dial gauge, and a fixed regulation element used for regulating the proportion between the display of the controlled pointer on the dial gauge and the actual inclination in advance is arranged on the controlled pointer. The vertical ruler has the advantages of simple structure, accurate vertical plane measuring precision and the like, the display amplification can be realized, and in addition, the measurement is convenient.