| 摘要 |
PROBLEM TO BE SOLVED: To obtain a revolver for a microscope having an inexpensive and simple structure and optionally selectively used for specifications fit to environment requiring high-degree cleanness and to ordinary environment. SOLUTION: A cover 43 is attached to an aperture part 47 provided on a cover 40, or a piping joint 44 provided with a piping tube 45 for vacuum-sucking air is attached thereto. COPYRIGHT: (C)2006,JPO&NCIPI
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