1. A method for measuring large components, comprising: providing a large component which has markings on at least one outer surface at a plurality of predefined and spaced-apart locations, wherein the markings have a predefined size and shape and are suitable for being precisely identified with regard to a position of the markings on the outer surface of the large component, providing a camera sensor system having at least one camera and one image analysis device that is in data connection with the camera for evaluating a camera image recorded by the camera, wherein a position and orientation of the camera in relation to a reference point at a distance from the camera is determined, recording camera images of the markings using the camera and transmitting the camera images to the image analysis device, evaluating the camera images using the image analysis device, wherein a position of the markings in relation to the position of the camera is determined, and calculating the position of the markings in relation to the reference point from the position of the camera in relation to the reference point and the position of the markings in relation to the camera, wherein target positions for the markings are determined, the target positions being predefined in relation to the reference point, and the target positions are compared with measured positions of the markings.