British N gauge

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British N gauge
Lms 4-6-0.JPG
Unnumbered Peco Jubilee
Scale2.06 mm to 1 ft (305 mm)
Scale ratio1:148
Model gauge9 mm (0.354 in)
Prototype gaugeStandard gauge

British N gauge is a model railway scale and gauge, rolling stock is to a scale of 1:148,[1] track is 9 mm (0.354 in) width as with all other N gauges making track and rolling stock approximately 10% out of scale with respect to each other. The 9 mm (0.354 in) track width derives from a scale of 1:160 for 1,435 mm (4 ft 8+12 in) standard gauge rails.


When N gauge was developed it proved impossible to fit the then available motors into scale models of British prototype locomotives. British railways use a smaller loading gauge than those in Europe and America, resulting in smaller locomotives. A greater body size was required on the models to accommodate the motors, so instead of adopting the correct 1:160 scale, 1:148 was used. This allows larger models, but means that the gauge is not an accurate representation of standard gauge. A similar problem and solution was adopted with OO gauge and British TT gauge in Britain. However, since N scales to 1,332-millimetre (4 ft 4.4 in) gauge, it is less out of scale than OO (1,257 mm or 4 ft 1.5 in) or TT3 (1,219 mm or 4 ft 0 in) in representing the 1,435 mm (4 ft 8+12 in) standard gauge.


  • Graham Farish is the most prolific manufacturer, producing British locomotives, rolling stock and buildings.
  • Peco manufactures track and British outlined buildings in kit form and rollingstock.
  • Dapol produces locomotives and rolling stock.
  • Fleischmann produces track locomotives and rolling stock etc.
  • Other companies produce kits for buildings, rolling stock and other parts - including Metcalfe models, Ratio, P&D Marsh and others.
  • CJM Models produce hand built models of locomotives and other rolling stock.[2]

Former manufacturers[edit]

  • Minitrix/Hornby - prior to being taken over by Märklin Minitrix produced British outline rolling stock and locomotives, which were sold in association with Hornby.[3]
  • Lima - Produced some rolling stock and locomotives
  • Hornby produced British outline buildings in N gauge as part of its Lyddle End range.

Related scales[edit]

Finescale modellers modelling in this size use 2mm finescale, which has 9.42mm track and a scale of 1:152.[1]


  1. ^ a b British N Scale Standards Archived 2013-02-03 at
  2. ^ CJM Models website
  3. ^ Minitrix Archived 2012-07-16 at

External links[edit]