The LMS used lattice posts for signals over 30ft tall (35ft from January 1944). The signal represented by this kit consists of an upper quadrant arm on a Stevens-type lattice post, with an LNWR-pattern post top and Adlake lamp. Some examples may still be in use on Network Rail today.

The kit can be built as a home or distant signal in any height between 32ft6in and 42ft. Below 32ft6in, tubular (kit S4/KM1) or wooden (kit S4/KM4) posts were used.

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 (140kb).