Detection tool for detecting height of rear control arm

The utility model provides a rear control arm height detection gauge, which relates to the technical field of automobile part detection and comprises a calibration block and a measurement assembly. The measuring assembly detects the height of the step edge of the rear control arm after being calibrated by the calibration block, and comprises a dial indicator and a measuring rod abutting against the lower portion of a measuring head of the dial indicator, the outer wall of the dial indicator is provided with a gauge cover which does not hinder movement of the measuring head of the dial indicator, and the outer upper portion and the outer lower portion of the measuring rod are slidably sleeved with a gauge body A and a gauge body B which are fixed to each other respectively. The gauge cover is fixed to the upper portion of the gauge body A. The outer wall of the measuring rod is sleeved with a spring, and the upper end and the lower end of the spring are connected with the concave cavity of the gauge body A and