Abstract: A frame apparatus for mounting a display panel of the type having frame members and frame connectors, the latter with fasteners. Each frame member includes a plurality of outwardly-extending arm structures and a grooved fastener-bearing surface between each adjacent pair of arm structures. The connector bears against the underside of coplanar opposed strips extending at the ends of an adjacent pair of arm structures. The connector has wing-like compression members facilitating the connection of adjoining frame members. Such connectors are configured to allow multiple joint forms and butt joints at any angle.

Abstract: A portable device for modeling of vehicle graphics having two flat opposite side panels each forming a side profile of the vehicle, at least two flat cross panels extending between the side panels and including front and back panels forming front and back profiles of the vehicle, respectively, hinged interconnections of the cross panels to the side panels such that the structure is erectable to a three-dimensional vehicle model and collapsible to a flat stack, and provision for replaceable attachment of graphics-bearing sheets on the panels. Preferred embodiments include a foldable enclosure dimensioned when folded to receive the collapsed flat stack and when unfolded to serve as a display mount.