A modular coupler coaxially mountable with a mast includes a first plate, a second plate and a column axially extending between the first and second plates. An arm is rotatably attached to the column and generally transversely extends therefrom and beyond a radial extent of the first plate and of the second plate. A mounting bracket projects from the arm along a portion of the arm outside the radial extent of the first plate and of the second plate. The mounting bracket is configured to removably mount a first surveillance equipment thereto. A motor is mounted to the arm outside the radial extent of the first plate and of the second plate and is configured to rotate the arm about the column.

A collapsible support structure for a removable electronic device. The electronic device having a touch screen configured for a user to access at least one predetermined construction document and/or application is removably connected to the support structure. The electronic device may be retained in a housing configured to be water resistant and/or impact resistant. The support structure may have a locking mechanism configured for an authorized user to gain access to remove the electronic device from the support structure, thereby, preventing an unauthorized user from gaining access for removal of the electronic device from the support structure. The support structure is configured to be foldable in a closed orientation during storage. The support stand may have a plurality of casters connected to a base. The base has a removable battery connected to a charging system with an integrated uninterruptable power supply.

A stand for supporting a board includes a wire frame having a first portion configured to support an edge of the board, and a second portion extending from the first portion. The stand also includes a latch mounted on the second portion. The latch is operable to restrain movement of the board relative to the wire frame.

A stand for supporting a board includes a wire frame having a first portion configured to support an edge of the board, and a second portion extending from the first portion. The stand also includes a latch mounted on the second portion. The latch is operable to restrain movement of the board relative to the wire frame.

Provided is a stand for a device that is capable of storing, in a stable state, a plurality of arms that are rotatably coupled. The stand for a device includes a supporter including a first fulcrum, a first arm that is coupled to the supporter so as to be rotatable around the first fulcrum and that includes a second fulcrum on one end, and a second arm that includes a first end and a device-side second end, the first end being coupled to the first arm so as to be rotatable around the second fulcrum. In a case where the first arm and the second arm are positioned at stored positions, the second fulcrum is positioned below the first fulcrum and, also, the second arm is tilted with respect to the vertical direction toward the first arm side.

Provided is a stand for a device that is capable of storing, in a stable state, a plurality of arms that are rotatably coupled. The stand for a device includes a supporter including a first fulcrum, a first arm that is coupled to the supporter so as to be rotatable around the first fulcrum and that includes a second fulcrum on one end, and a second arm that includes a first end and a device-side second end, the first end being coupled to the first arm so as to be rotatable around the second fulcrum. In a case where the first arm and the second arm are positioned at stored positions, the second fulcrum is positioned below the first fulcrum and, also, the second arm is tilted with respect to the vertical direction toward the first arm side.

The disclosed invertible structures rely on combinations of translational movements to effect inversion. An exemplary invertible structure includes a track operable to be slidably coupled to a connector element of a longitudinal structure. In an embodiment, the connector element may include at least two connectors at least partially disposed in a slot defined in the track, which may have a plurality of translational axes for translational movements of the connectors of the longitudinal structure that would effect the inversion of the longitudinal structure.

The disclosed invertible structures rely on combinations of translational movements to effect inversion. An exemplary invertible structure includes a track operable to be slidably coupled to a connector element of a longitudinal structure. In an embodiment, the connector element may include at least two connectors at least partially disposed in a slot defined in the track, which may have a plurality of translational axes for translational movements of the connectors of the longitudinal structure that would effect the inversion of the longitudinal structure.

A storage stand having a base with a main tube having a first end, a middle portion and a second end with at least one wing receiver affixable to the main tube, a pair of outer stand tubes each having a first end, a middle portion and a second end; a pair of leg connectors to connect the main tube first and second ends to the middle portions of the pair of outer stand tubes; feet located at each of the outer stand tubes first and second ends; at least one wing secureable to the at least one wing receiver; and at least one payload carrying member affixable to the at least one wing.

A storage stand having a base with a main tube having a first end, a middle portion and a second end with at least one wing receiver affixable to the main tube, a pair of outer stand tubes each having a first end, a middle portion and a second end; a pair of leg connectors to connect the main tube first and second ends to the middle portions of the pair of outer stand tubes; feet located at each of the outer stand tubes first and second ends; at least one wing secureable to the at least one wing receiver; and at least one payload carrying member affixable to the at least one wing.