Vertical detection device for building construction

The utility model belongs to the technical field of perpendicularity detection, and particularly relates to a perpendicularity detection device for building construction, which comprises a detection device body mainly composed of a measuring scale sleeve A, a measuring scale sleeve B and a pointer, and the measuring scale sleeve A and the measuring scale sleeve B are respectively arranged far away from the ground and close to the ground. The pointer sleeves the outer side of the measuring ruler sleeve B. The detection device body is provided with an adjusting assembly used for adjusting the distance between the measuring ruler sleeve A and the measuring ruler sleeve B. The vertical detection in different length ranges can be carried out through the arranged adjusting assembly, the use range of the device is expanded, the use effect of the device is improved, the stability of the vertical detection of the device is improved, the detection accuracy of the device is improved, the whole device can be driven to mo