Schematic view of a double ringed thick disk. Observed at inclination i, circular rings will appear elliptical. The height of the scattering surface of Ring 1 (H_{τ = 1}(R1)) can be found by determining the semi-minor axis (b), i and the distance between the star and the center of the ellipse (u). Note that this figure has the purpose of explaining how to determine H_{τ = 1} for the different rings, not to portray ideas about the radial density distribution.