Abstract: A mobile radiography system includes sensors to detect a tilt angle and or pitch angle of the system to prevent deployment of the extendable boom and/or column and/or prevent activation of a motor drive if the tilt angle or pitch angle exceeds a pre-set boundary.

Abstract: An adjustable collimator includes a pair of knobs configured to adjust an aperture size by manipulating one or both of the knobs. The knobs may be disposed at opposite ends of a first shaft. The knobs may be configured to each adjust a same dimension of the aperture or to each adjust a different dimension of the aperture.

Abstract: A display board system includes a display board with a clear or optically transparent dry-erasable writing surface and a plurality of accessories. The display board accessories include a support member having an engagement surface with a micro or nano-suction material including a plurality of bubbles or cavities filled with air that is configured to provide releasable and secure attachment of the accessory to the dry-erasable writing surface of the display board. The micro or nano-suction material of the accessories, which can include document holding apparatus, labels, letters, numbers, symbols, document holders, among others, releasably adhere to the dry-erasable writing surface of literally any display board and are not reliant upon either magnets or adhesives for retention.

Abstract: An apparatus for holding a plurality of documents includes a plurality of dividers. The dividers include a front facing surface, a rear facing surface, an upper end and a lower end. Each divider includes a first attachment member that is attached to a corresponding second attachment member of an adjacent divider so as to form a stacked and interconnected configuration. A frame retains lateral edges of the stacked dividers in which the stacked plurality of dividers define a corresponding plurality of document retaining pockets. In at least one version, the size of the retaining pockets can be selectively and independently adjusted, as needed wherein the apparatus can be used in conjunction with at least one display board, such as a dry-erase board.