A Railway Signal Co. 13-lever demonstration scale model lever frame fully interlocked to represent the layout of a double line railway with trailing crossover and both up and down sidings. The frame accurately represents the final style of tappet frame produced by the company at its Fazakerley works from the 1890s until the cessation of production. The model which is engraved with the company's name stands 19in tall, is complete with signal box diagram and is mounted on a wooden display board. It is thought to have been built around 1910.