A section of the illuminated diagram in the new signal cabin at Amersham. The face has been removed to show the "egg-crate" construction with box units mounted on a perforated metal plate. This section of the diagram shows the Up and Down running lines and the two reversing sidings to be constructed at the country end of Amersham station.
Photographed by Colin Tait, 17 Mar 1960
Location: Amersham, Chiltern DC HP6
Image no: 9389
Inventory no: 1998/54287