I too am in search of an inspection system which has the capability of detecting .0005 scratches on a shiny metal surface. The problem is compounded in that the surface is a soft aluminum alloy which can be scratched very easily. This makes the ideal system one that does not come in contact with the surface. The system would be required to be remote and perform the job in East Tennessee.Does anyone have any ideas or contact info for such an inspection system? The subject parts are 20" wide x 72" long.