### Checks related to fiducial objects

Fiducial are aides to the automated pick & place assembly systems to properly orient and position components. Fiducials are typically copper geometries on the placement layers in close proximity to the component footprint or land pattern. There are two common types of fiducials, component and global. Component fiducials are typically associated with components, global fiducials serve as reference points and define the orientation of the physical PCB itself.
Not all components require fiducial. This group of checks defines rules that must be met on fiducials for particular set of components for effective assembly process.