A measuring assembly for detecting the wall thickness of a pipe, including an ultrasonic probe and a testing head with a main element which receives an ultrasonic probe and the lower face of which defines a main element support surface is provided. The testing head has two wing elements, the lower face of each of which defines a wing element support surface and which are held on the main element in a pivotal manner about pivot axes extending substantially parallel to one another in a longitudinal direction such that the wing element support surfaces can be moved towards each other and away from each other. The wing elements are connected via synchronizing means such that the pivotal movements of the wing elements about the corresponding pivot axes are carried out in a synchronous manner. An associated method is also provided.
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