Portable automobile overall dimension calibrating device

The invention relates to a portable assembly type automobile overall detection and calibration device with two symmetrical plane mirror images. The invention provides the portable assembly type automobile profile detection and calibration device with the two symmetrical plane mirror images, which is a novel automobile overall dimension calibration device, and the device is symmetrical in structure, so that the material utilization is more reasonable. Compared with a main beam, the device is large in structural polar inertia moment, a closed-loop internal stress system formed by combining a pressing rod of the main beam and a stay wire of a steel wire rope is utilized, the rigidity of a simulated vehicle body on a horizontal plane and a longitudinal vertical plane is larger, the deformation amount is small, the lightweight design with great possibility is achieved, and the device is convenient to carry and use on site. Size calibrating devices in the length direction, the width direction and the height directi