Abstract: An interface apparatus includes a base element, an interface element, and an attachment mechanism for attaching the interface element to the base element. The attachment mechanism is pivotable within a plurality of degrees of freedom. The interface element is an extensible member which is, in two of its embodiments, pivotally mounted so as to be rotatably adjustable about a pivot point with respect to a primary member. The primary member may be a base member or another display member. These members may be computer keyboards or displays, such as liquid crystal displays (LCDs), audio speakers, or the like such as are used in desk top or lap top computers and terminals.