Perpendicularity detection tool

The utility model belongs to the technical field of part detection, and particularly relates to a perpendicularity detection tool which comprises a bottom plate and a positioning assembly, one side of the top of the bottom plate is connected with a supporting plate, one side of the supporting plate is provided with a motor, the front end of the motor is connected with a threaded rod, the top of the bottom plate is provided with a sliding way, a sliding block is connected in the sliding way, and the sliding block is connected with the positioning assembly. The top of the sliding block is connected with a supporting base, the top of the supporting base is connected with a support, a pneumatic measuring head is arranged on the support, the support is in threaded connection with a threaded rod, the threaded rod is driven by a motor to rotate, and the threaded rod rotates to drive the support to move back and forth on the threaded rod. The support moves to drive the pneumatic measuring head to move to the position