| Z |
6.5mm |
1.5mm:1ft |
1:200 |
| |
This is a commercial gauge produced
by Markin. |
|
| 2mm |
9.42mm |
2mm:1ft |
1:152.3 |
| |
The purists of N gauge developed this scale.
It is slightly more accurate than the mainstream scale of 1:148. |
|
| N |
9mm |
2mm:1ft |
1:160
1:148 (UK) |
| |
This gauge is half the size of OO. In Europe
and North America the scale of 1:160 is used for N gauge models running on 9mm
track. |
|
| TT | 12mm |
3mm:1ft |
1:101.6 |
| |
This is a modeling scale whose name stands for Table Top. The original scale (as produced in the UK by Triang) is 1:120 (from a common engineering scale where one inch equals ten feet) and 12 mm gauge. This appears to have an America origin.
British TT is 3mm scale; that is, 1:101.6. Gauge may be 13.5 or 14.2mm fine-scale standard.
Major support is given by the Three Millimetre Society.
|
|
| H0 |
16.5mm |
3.5mm:1ft |
1:87 |
| |
This is the major gauge use outside the UK.
At 3.5mm to 1ft, the track gauge at 16.5mm is virtually exact to scale for the
standard gauge. One can run HO gauge rolling stock on OO gauge layouts, but
the difference in scale will be clear (HO being 15% smaller). |
|
| 00 |
16.5mm |
4mm:1ft |
1:76.2 |
| |
A British system, which while being most
popular gauge, technically it suffers from a track gauge that is 15% under
scale (18.83 would be correct). |
|
| EM |
18.2mm |
4mm:1ft |
1:76.2 |
| |
An attempt to make the OO layout gauge
more realistic. At 18.2mm it still falls short of the 18.83 ideal, but was
felt to be close enough. |
|
| P4 |
18.83mm |
4mm:1ft |
1:76.2 |
| |
P4 uses track and wheel standards as close in accuracy as practical to a true scale 4mm scale reproduction of the UK standard gauge prototype track, with some minor allowances for manufacturing and modelling tolerances. |
|
| Scale 4 |
18.82mm |
4mm:1ft |
1:76.2 |
| |
P4, or Proto-4 was a registered trade mark, so Scale-4 was set up and the name has become the accepted standard term. S4 uses track and wheel standards based upon UK standard gauge prototype track without any compromises |
|
| S |
0.884in |
3/16in:1ft |
1:64 |
| |
Near perfect scale/gauge ration, falling
between O and OO systems. |
|
| 0 |
32mm |
7mm:1ft |
1:48 (USA)
1:45 (Europe)
1:43.5 (UK) |
| |
Once seen to be the preserve of those with
engineering skills to scratch build. This scale has become more popular due to the availability
of a large range of quality locomotive and rolling stock kits. Technically
the inside track width of 32mm is 3% under-scale, it should be 32.958mm. |
|
| 7mm Narrow |
16.5mm |
7mm:1ft |
1:44 |
| |
?? |
|
| Scale 7 |
33mm |
7mm:1ft |
1:44 |
| |
A new refinement using exact wheel profiles and an
exact scale/gauge ratio, hence giving greater accuracy. |
|
| 1 |
45mm |
10mm:1ft
9.5mm:1ft
3/8in:1ft |
1:30
1:32 |
| |
This is almost the biggest scale used for standard
(and narrow) gauge models. Some enthusiasts prefer to use 3/8in to 1ft, which gives
a more accurate scale/gauge ratio. Most models would be scratch built. |
|
| 2 |
2in |
7/16ft:1ft |
1:?? |
| |
One of the original scales established in 1899
but no longer used. |
|
| 3 |
63.5mm (2½in) |
½in (or 17/32in):1ft |
1:22.5 |
| |
Best suited to gardens, mainly steam but
battery also becoming popular. |
|
| G |
45mm |
??:1ft |
1:22.5 |
| |
This is scaled to suite the modelled prototype. It
is used in garden layouts with 2ft, 2ft 3in and 3ft and metre gauge models
available. |
|
| 16mm Narrow |
32mm |
16mm:1ft |
1:19 |
| |
?? |
|
| 3½in |
3½in |
¾in:1ft |
1:16 |
| |
?? |
|
| 5in |
5in |
1 1/16in:1ft |
1:12 |
| |
Very popular for home-builders and amateur passenger
hauling, often on a raised track. |
|
| 7¼in |
7¼in |
1½in:1ft |
1:8 |
| |
Mainly used for serious passenger hauling or in
public parks, always at ground level. |
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