A balance staff including a main shoulder of a balance, a first radial lateral bearing surface for this balance, a roller sleeve shoulder, and a balance spring collet shoulder. In a preferred embodiment, the Z-block comprises three stacked pieces or layers: an upper and lower piece which are similar in structure, and a unique middle piece. A generator device formed in the integrated circuit generates a pulse signal for turning on and off a laser beam based on image data. In one embodiment, lens cap position signals are sent from the lens cap to the illumination controller through wires that secure the lens cap to the projector. Additionally provided is a methodology for using the embedded sorter to sort FOUPs and a plurality of wafers within the AMHS.