3D Inspection Service
The reference data may come in the form of a table, with values at specific points or features, a cad model, or 3d scan. 3D inspection services may require datum measurements, where the part to be inspected is located in a fixture that is specifically designed to orient the part by an ordered method. In some cases, the part may have features that are designed specifically to be referenced by datums, if no functional feature of the part provides a clear reference.