The image shows a large signboard hanging on the wall of a train station. The signboard is titled "Signal Box B" and is located at the top of the wall. Below the signboard, there is a map of the signal box B, which is located in the center of the image. The map is divided into two sections, with the top section showing the signal lines and the bottom section showing a signal box. 

On the left side of the board, there are two clocks, one with a red face and the other with a green face, both of which are used to measure the speed of the train. The clock on the left has a white face with black numbers and hands, while the one on the right has a black face with white numbers.

There are also several other clocks and equipment scattered around the board. On the right side, there appears to be a control panel with various buttons and switches. The board is mounted on a gray brick wall, and there are a few other signs and information boards visible in the background.