A simple method of symmetrical part inspection is as follows:
This process is repeated until the whole symmetrical feature has been inspected with the required resolution. This type of inspection could be used, for example, to inspect the wall thickness of a cylindrical part (aluminum can, barrel, bullet casing, plastic container , etc...)
By using the variable functionality in VBAI, you can decrease your imaging requirements and perhaps even simply your physical inspection setup.
Using variables, you can take a single image, then repeat the following procedure until the whole feature has been inspected with the required resolution:
Example code from the Example Code Exchange in the NI Community is licensed with the MIT license.