The GOM scanner uses a stereo camera set-up to measure complex parts very accurately. It projects different fringe patterns onto the object‘s surface. These patterns are recorded by the two cameras and converted into a 3D CAD file. The GOM scanner at the Whittle Lab is capable of resolving parts down to a few microns – it has been successfully used to resolve the true manufactured shape of nominally circular compressor leading edges of ~0.5mm diameter.