Providing tools for C-Scan imaging, 2-axis MapSCANNER and MapROVER detect wall thickness loss due to corrosion, abrasion, or erosion. Semi-automated MapSCANNER works with HydroFORM or Dual Linear Array phased array corrosion mapping solutions, while fully automated MapROVER works with HydroFORM solution. MapROVER utilizes 4 magnetic wheels that are motorized for constant data acquisition up to 147 mm/s. Motorized raster arm enables 600 mm scan width traveling at speed up to 900 mm/s.