1. A terminal for measuring at least one dimension of an object, comprising: a range camera configured to produce a range image of an area in which the object is located; a visible camera configured to produce a visible image of an area in which the object is located; and a display; wherein the range camera, visible camera, and display are fixed in position and orientation relative to each other; and wherein the display is configured to present information associated with (i) the range camera's field of view and (ii) the visible camera's field of view.