Measuring tool for detecting degree of symmetry between piston pin hole axis and piston cylindrical center line

The invention discloses a measuring tool for detecting the degree of symmetry between a piston pin hole axis and a piston cylindrical center line. The measuring tool comprises a bottom plate, a vertical elevating system, a horizontal feeding mechanism, a measuring rod, a measurement feeding mechanism and a measurement mechanism. The vertical elevating system and the horizontal feeding mechanism are fixed on the bottom plate. The measuring rod is mounted on the vertical elevating system, and the vertical elevating system drives the measuring rod to move up and down. The measurement feeding mechanism is mounted on the horizontal feeding mechanism, and the horizontal feeding mechanism drives the measurement feeding mechanism to move left and right. The measurement mechanism is mounted on the measurement feeding mechanism, and the measurement feeding mechanism drives the measurement mechanism to move front and back. The structure is simple and light, the manufacturing cost of the measuring tool is low, the maintenance is convenient, and the working efficiency of detecting the degree of symmetry between the piston pin hole axis and the piston cylindrical center line is further improved.