A system for facilities management can include a tag device having a transceiver and a facilities management process. The receiving component can receive, from a first user, item identification data based on a tangible item and an ownership verification indicator. Then, a sub-block with variation is designated as a start sub-block, and sub-blocks adjacent to the start sub-block are searched and the sub-blocks with variation are grouped to generate at least one variant sub-block set, in which the variant sub-blocks in the set are connected to each other and form a rectangle. The support mechanism holds the protector plate within the chamber in spaced, opposing relation to the surface to provide a gap between the protector plate and the surface which presents a diffusion barrier to particle migration into the gap and onto the surface, thereby inhibiting particle contamination of the surface. The object to image retainer is for housing the measuring adjunct and compensates for a magnification ratio relating to the intracorporeal passage and the intracorporeal passage as it appears in the image.