1. A thermal imaging camera for taking thermographic images of a measurement object in the infrared region, with a display tool built in or on the housing for a representation of the acquired thermographic images, where the thermal imaging camera is made as a hand-held unit, characterized by the fact that an electronic evaluation unit is integrated into it, with which at least one acquired thermographic image can be stitched with another thermographic image, where the images each repeat a same image region of the measurement object, said thermographic images being stitched about said same image regions to form a thermographic overall image that can be displayed with the display tool, where the display tool has a zoom function for free selection of an image segment of the overall image that is to be magnified.