Method and apparatus for measuring loss of a hollow aircraft or gas turbine component

The present invention relates to a device for damage measuring a hollow aircraft or gas turbine component (6) with a coordinate measuring arm (2) on which a first sensor device (11) having an outer contour sensor (7) for detecting the outer contour of the component (6) and / or for determining position of a damaged portion and a second sensor means (12) with an ultrasonic sensor (8) for detecting the contour of a cavity (16) in the component (6) and / or for determining a wall thickness of the damaged area and / or for determining the wall thickness is provided after a repair of the damaged area, wherein on the coordinate measuring arm (2) a third sensor means (13) with a white light interferometer (9) and / or laser triangulation sensor is provided.