A syringe assembly includes a tubular barrel having an open proximal end, a distal end, and an internal a fluid retaining chamber. The light emitting device includes data lines, scan lines, pixels and a discharging circuit. The arms include locking screw holes where the screws converge toward each other, but do not impinge so as to provide-multiplanar fixation. Furthermore, implementations of the present invention provide methods for applying texture in an efficient, uniform manner. The location of the mobile station may be determined based at least in part on the distance metric.