An apparatus having an x-ray head adjustable in at least three mutually transverse axes (x, y, z) for directing x-rays from different positions toward a part and sensing the x-rays from the part, the apparatus comprising: at least one detector for sensing the x-rays; and a frame for supporting the x-ray head and the detector, characterised by: an x-axis adjustment mount of the frame operably connected to the head and detector for adjusting the head and detector in an x-axis fore and aft direction; a y-axis adjustment mount of the frame operably connected to the head and detector for adjusting the head and detector in a y-axis lateral direction; a z-axis adjustment mount of the frame operably connected to the head and detector for adjusting the head and detector in a z-axis vertical direction; and at least one fine adjustment mount (110, 124) incorporated in the frame operably connected to the head and detector for providing finer adjustments of the head and detector in one of the x, y and z directions than the corresponding one of the x, y and z-axis adjustment mounts to allow the head and detector to be moved rapidly via rough adjustments provided by the one adjustment mount, and to move more precisely via fine adjustment provided by the one fine adjustment mount. at least one detector for sensing the x-rays; and a frame for supporting the x-ray head and the detector, characterised by: an x-axis adjustment mount of the frame operably connected to the head and detector for adjusting the head and detector in an x-axis fore and aft direction; a y-axis adjustment mount of the frame operably connected to the head and detector for adjusting the head and detector in a y-axis lateral direction; a z-axis adjustment mount of the frame operably connected to the head and detector for adjusting the head and detector in a z-axis vertical direction; and at least one fine adjustment mount (110, 124) incorporated in the frame operably connected to the head and detector for providing finer adjustments of the head and detector in one of the x, y and z directions than the corresponding one of the x, y and z-axis adjustment mounts to allow the head and detector to be moved rapidly via rough adjustments provided by the one adjustment mount, and to move more precisely via fine adjustment provided by the one fine adjustment mount. an x-axis adjustment mount of the frame operably connected to the head and detector for adjusting the head and detector in an x-axis fore and aft direction; a y-axis adjustment mount of the frame operably connected to the head and detector for adjusting the head and detector in a y-axis lateral direction; a z-axis adjustment mount of the frame operably connected to the head and detector for adjusting the head and detector in a z-axis vertical direction; and at least one fine adjustment mount (110, 124) incorporated in the frame operably connected to the head and detector for providing finer adjustments of the head and detector in one of the x, y and z directions than the corresponding one of the x, y and z-axis adjustment mounts to allow the head and detector to be moved rapidly via rough adjustments provided by the one adjustment mount, and to move more precisely via fine adjustment provided by the one fine adjustment mount.