A surface of a dynamic object such as a polygon mirror is measured to determine configuration. In one specific embodiment, a sheath surrounds an intraoral electronic image sensor, and is provided with signal conductors integrated therein. The quenching medium andor the source of heat are regulated so that they work in combination to maintain the workpiece at a holding temperature which is above the temperature at which the martensite phase forms in the alloy. 95 at the rated particle size of the membrane. Additionally, processes are provided for cleaning such soiled andor stained fiber surfaces utilizing aqueous forms of such surfactant-free cleaning compositions having a surface tension of greater than about 38 dynes per centimeter.