An adjustable-depth ring assembly for mounting an electrical device in an electrical box that is accessible through a wall opening in a wall member disposed forward of the electrical box. An injection apparatus may include a transition-bore needle apparatus, which has a proximal end, a distal end, and a lumen extending from the proximal end to the distal end, in which the diameter of the proximal end is greater than the diameter of the distal end. The method then includes determining a ratio of perimeters or areas of the designed critical width integrated circuit segment to the simulated printed critical width integrated circuit segment, and predicting functionality of the critical width integrated circuit segment after printing based on the ratio of perimeters or areas. A core layer of a core material having a higher refractive index than the low refractive index material of the lower cladding layer overlies the top of the ridge portion of the lower cladding. Unless the user who accesses the file has the encrypting key kc, he or she cannot decrypt the copyright information. In another embodiment, the mirror is freely rotatable.