Abstract: A hinge mechanism for connecting a surface panel such as a table top to a support frame and operative to guide the panel for pivotal movement about a horizontal axis between a stowed upright attitude adjacent a vertical datum plane and a horizontal operative attitude, the hinge comprising a first link pivoted at a first point to the panel and to the support frame and a second link pivoted to the panel at a point spaced from the first pivot and operatively connected to the first link through a bearing which is slidable in slots, in the first link and in a guide plate, to provide positive triangular guidance and support for the panel, with respect to the frame, in each of the panel's adjusted positions.