One common type of Great Northern Railway signal consisted of a somersault lower quadrant arm on a lattice post, with a ball and spike finial and round-case lamp. Post-Grouping, the LNER modernised many of these signals by replacing the arm with the upper quadrant Westinghouse type. A square-case lamp was also fitted at the same time. The resulting design was also used for new installations. An alternative finial is supplied to represent the shallow pyramidal pattern used on later LNER signals. Some examples are still in use on Network Rail today.

The kit can be built as a home or distant signal in any height up to 21ft.

The kit is designed for soldered construction, but Araldite or superglue can be used in places, particularly if the finished signal is not intended to operate. Some simple marking out, cutting and shaping of parts is required. To see exactly what is involved in constructing this kit, download the instruction sheet as an Adobe Acrobat® file (138kb).