| 摘要 |
Device comprising an arm (B, Bl) with divided and/or extensible trellis structure, attached to a revolving tower (A, Al) attached to crane mounted on a lorry for supporting telecameras and/or special equipment to inspect the underside of road viaducts, highway, railroad and/or bridges. The device includes braces (c,Cl) between the arm and tower, and braces (e,El) between the arm and side arms (D, Dl).
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