In an examining apparatus or method, values of thickness and characteristic of an object, or distributions thereof can be simultaneously acquired. The size of TOF PET data may be reduced without significant loss of information through a process called rebinning. When the surface acoustic wave device is mounted on a circuit board or the like, therefore, the through hole 9 is closed by the insulator 11, so that no bubbles are produced in the through hole 9, and cracks can be prevented from appearing, thereby making it possible to provide a highly reliable surface acoustic wave device having no inferior connection or the like.