| 摘要 |
An apparatus for locating positions on a surface of a structural member indicating the presence of elements within and below the surface of the structural member by means of a detector (1) including a scanning head (3), a position measuring device (4) and an evaluation unit (5) all located within a housing (2). A marking device (6) is connected to and interacts with the evaluation unit (5) for automatically placing a visible marking on the surface of the structural member at the location of the elements scanned by the detector.
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