Building perpendicularity auxiliary measuring device

The invention discloses an auxiliary measuring device for building perpendicularity, and relates to the technical field of building measurement, the device can automatically adjust the overall levelness through a hydraulic system and a counterweight assembly, and grinding discs on the two sides of the bottom of the device can realize different pressures and moving speeds according to the difference of the stock of hydraulic oil, so that the grinding effect is optimized, and the working efficiency is improved. The device automatically adjusts flowing of hydraulic oil and moving of the counterweight assembly according to the inclination condition of the ground, has good self-adaptability and is suitable for the ground with different inclination degrees, a user only needs to place the device on the ground and start a hydraulic system, the adjusting process can be automatically completed, complex operation steps are not needed, and operation is convenient. The automatic adjusting function of the device reduces th