A measuring device for measuring an excavation site is described having a supporting frame, at least one profile measuring apparatus, associated with the supporting frame, facing a corresponding lateral wall of the excavation site. Each profile measuring apparatus has a feeler element arranged to remain in contact with the excavation site lateral wall. A sensor system associated with the supporting frame is provided having rotation sensors, and translation sensors. A data processing system, based on the rotation and translation data measured by the sensor system, is provided for calculating the actual profile of the lateral wall of the excavation site.
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