A system for inspecting the end faces of fiber optic connectors includes a fixture holding a plurality of fiber optic connectors. Disclosed embodiments may image a test article from two or more perspectives through a substantially transparent fiducial plate bearing a fiducial marking; camera viewing angles and apparent relative distances between a feature on a test article and one or more fiducials may enable accurate calculation of feature position. The adjustable antenna structures may have a movable dielectric support.