Ratio
OO/HO
ARP Signal Box
These specially reinforced ARP (Air Raid Precautions) signal boxes featured substantial construction, primarily to protect the locking room gear from bomb blasts during air raids in World War II. A number of similar signal box designs were still to be found around the rail network until quite recently, due to them being difficult to demolish!
The 554 includes all moulded parts required which are produced to a high standard and in base colours. Kit requires painting and light weathering to create the signal box pictured above.
- Ratio 553 Signal Box Interior
- All 1:76 Scale Model Railways and Modelling projects
Please find below a list of useful guides relating to this product.

Ratio Scale Models was started in 1950 by Jack and Dev Webster, producing fine coach kits made from sheet plywood pressings in Chorleywood, Hertfordshire. They commenced manufacturing plastic kits in 1959 and the name was changed to Ratio Plastic Models. The factory was moved to Goring-on-Thames in 1961, and to Sturminster Newton in 1972. As the range continued to grow, they moved to larger premises in Buckfastleigh in 1986. Ratio was sold to PECO in 1996; production now takes place at a new factory in Buckfastleigh, along with the Wills and Parkside ranges.