Although upper quadrant arms had been in use since shortly after the Grouping, the LMS tubular post signal dates from the mid-1930s. It was used for new installations and renewals until the end of the LMS period, and by the London Midland Region of British Rail(ways). The design does not appear to have been common in Scotland, probably because the pre-grouping companies used lattice posts, which would have remained in better condition than the timber posts used south of the border. Many examples are still in use today, and Network Rail are even installing new ones where replacement by colour lights is inappropriate.

The kit can be built as a home or distant signal in any height up to 27ft6in. Taller signals will require an extra S09/5 ladder to be purchased and joined.

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 (125kb).