Reverse engineering using 3D scan data is the most efficient & effective way to generate a CAD model from a physical object that has any kind of complex or free-form shape. While using traditional measurement techniques such as calipers to reverse engineer these complex surfaces can be difficult or even impossible, 3D laser scanning shines – literally! Scan data can be turned into a model representing its as-built shape or to match original as-designed features – including parametric ones.