<p>The purpose of the present invention is to provide a robot system capable of accurately measuring the assembly precision of a processed article that is formed including a rotary shaft. In order to achieve this purpose, the robot system (1) according to one embodiment of the present invention is provided with a robot (10) and a precision-measuring device (40). The robot (10) conveys a processed article that is formed including a rotary shaft. The precision-measuring device (40) holds the rotary shaft of the processed article conveyed by the robot (10) substantially parallel to the vertical direction, and measures the assembly precision of the processed article while rotating the entire processed article by rotating the rotary shaft.</p>
