The most obvious feature visible here is the brass hour wheel which forms part of the going train. From the pointer one can see that this photograph was taken at 25 minutes past the hour. (The wheel actually turns anti-clockwise.) Notice the four cams which rotate around this dial. These depress the lever coming from the chiming train and suddenly realease it every fifteen minutes, which triggers the chimes. To the left can be seen the winding barrel of the striking train and in front of it the notched countwheel (black) which controls the number of strokes of the hour bell. Directly below this can be seen a thick cable next to the the wall. This is the cable descending from the winding barrel to the 1 ton weight in the shaft below. At the bottom right can be seen the electric winding apparatus which is used to wind the striking and chiming trains. Slightly to the left and behind this can be seen the pendulum descending at an oblique angle through the floor below. The widest part of the pendulum visible here is the ledge where the pennies are placed to adjust the rate of the clock, although the coins cannot be discerned in this photograph.