Method for testing positioning devices

A method for testing dimensional accuracy of transportable positioning devices for production of a motor vehicle, the method comprising:

• providing a plurality of locaters on positioning devices so that each body component of the motor vehicle is accurately geometrically positioned on a respective one of the positioning devices, wherein based on an xyz coordinate system, the locaters include an xyz locator which determines a position of a corresponding body component in x, y, and z directions, a yz locator which determines a position of a corresponding body component in the y and z directions, and z locators which determine a position of a corresponding body component in the z direction;
• moving, in a motor vehicle production cycle, the positioning devices with the respective body component positioned thereon to different workstations;
• measuring, by a control unit during the motor vehicle production cycle in the workstations and/or in an inline measuring station for an acquisition of measured values in the motor vehicle production cycle, predefined measuring points on each body component positioned on each transportable positioning device as measurement data;
• and
• evaluating, by the control unit, the predefined measuring points to determine a dimensional accuracy of each transportable positioning device.