The system utilises the proven reliability of the Scorpion wall crawler with an added transverse scanner fitted to the front end. The scanner covers a 130 mm wide strip at a speed of 600 mm per second. The adjustable scanning head allows inspection of small vessels and pipes with a minimum diameter of 1m. This technique meets or even exceeds requirements of the relevant inspection standards without the need for costly rope access or scaffolding. Stored data can be viewed as either A, B or C scan.