An endoscopy device includes several light guides, each light guide having one or more optical fibers. A plurality of teeth spaced at a predetermined distance engage lugs of a lock nut. The system retrieves program information for the program of interest and stores the program information in a calendar at the daytime of broadcast. 6, so as to heat said piece in a localized manner with a view to essentially softening only said outer surface and lowering the dynamic rub coefficient thereof; and applying the outer surface of the thus-heated composition onto the area to be treated. Furthermore, the invention also allows for the extraction of material with less solvent consumption, good reproducibility, excellent solubility, energy conservation, environmental protection, and showed great potential for efficient sample preparation and large-scale industrial application in the near future. Man power for designing a combination meter can be thereby decreased; further, the combination meter capable of restricting generation of the electrical noise is achieved.