A timing distribution apparatus. The driving unit protrudes from a surface of the vibrating member, and includes a first driving unit and a second driving unit that are formed to sandwich the moving member in a perpendicular direction to the surface. The transducer holder is adapted to hold an ultrasonic transducer and the transducer holder is fixed to the body member. Further, the barrel jacket holds the barrel and at least a portion of the range finder, the control electronics, the transmitter, the operating elements, or the power supply. An overlap distance between the second electrode and the second electrode current collector in a first direction corresponding to an extension direction of a conductive film positioned on the second electrode current collector is less than an overlap distance between the second electrode and the second electrode current collector in a second direction crossing the first direction.