An apparatus and a method capable of measuring a weight load of an inflamed foot of a lab animal objectively and precisely while the lab animal is walking freely in a non-binding state is provided. A second window panel is mounted for movement relative to the first window panel. This scaling factor is used to scale the image horizontally and vertically, thus preserving the aspect ratio of the image. The one or more media items are moved from the first device to the second device. When data of a sequence number before that of first data of next application data is to be transmitted after transmission of the next application data is started, the data is read from the temporary buffer area of the data storage unit. The harness member is engageable to the shoulders of the user.