<p>An ultrasonograph is provided with a probe (1), a controller (3) connected to the probe (1), and a display device (4) connected to the controller (3). The controller (3) controls the display device (4) to display the detection image of a section being detected which is detected by the probe (1) and an inclined position relation image showing the inclined position relation of the probe with respect to the detection image of the section being detected. This enables even an unskilled person to perform precise measurement.</p>
