PROBE

PROBLEM TO BE SOLVED: To provide a probe capable of using a plurality of frequencies at a low cost so as to change over them corresponding to a purpose. SOLUTION: The probe is equipped with a plurality of vibrators 12A and 12B for transmitting and receiving ultrasonic waves having respectively different frequencies and outputting signals to the outside on the basis of the transmitted and received ultrasonic waves, a relay 28 for selecting the signals so as to output the signal, which is outputted from either one of a plurality of the vibrators 12A and 12B, to the outside and a rotary drive shaft 40 for adjusting the incident angle of the ultrasonic waves outputted from the vibrator 12A for outputting the signal selected by the relay 28. COPYRIGHT: (C)2004,JPO&NCIPI