An apparatus for supporting a wing assembly at a wing assembly support height. Base sections are provided, each having a different predetermined height with respect to one another. A movable platform carries a base section, and a wing assembly support section rests on a selected base section and includes a wing assembly connector, which is movable in a first plane and a second plane generally perpendicular relative to the first plane. A differential height is defined between the wing assembly support height and the combined heights of the platform and the height of wing assembly connector, relative to the bottom of the wing assembly support section. At least one of the base sections is of a predetermined height approximating the differential height and is carried on the platform. The wing assembly support section is carried on such base section.