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IIm scale 1:22.5 45

Similar to G scale above, this scale also uses 45 mm (1.772 in) gauge track, and is used for both indoor and garden railways of narrow gauge prototypes. It depicts 1 metre gauge trains in exact proportion to their correct track gauge.


½ inch scale 1:24 45

Similar to G Scale above, this scale also runs on 45 mm (1.772 in) gauge track, and is generally used for both indoor and garden railways of narrow gauge prototypes. The scale of 1:24 in combination with 45 mm (1.772 in) track is an attempt to model North American and UK 3 ft (914 mm) narrow gauge or 3 ft 6 in (1,067 mm) gauge trains in better proportion to the rails they run on.


2 gauge 1:29 50.4/45

The dominant scale used in the United States for models of "standard gauge" trains running on 45 mm (1.772 in) track, even though 1:32 is more prototypically correct. 1:29 represents standard gauge using 2 in (50.8 mm) gauge track, the original gauge 2. This fell into disuse as gauge 1 at 1.75 inch was very close. Some manufacturers kept the scale for the models but running them on slightly narrow gauge track.


1 gauge 3/8 inch scale 1:32 45

This large scale, once rarely seen indoors in modern use but frequently used for modelling standard gauge trains as garden railways, is making a come-back. The Japanese firm of Aster Hobby offers ready-to-run gas-fired livesteam models. Accucraft Trains http://accucraft.com also offer finely crafted livesteam models in this scale. Gauge 1 has seen something of a remarkable revival in recent years after decades of near extinction commercially, with a growing number of smaller UK manufacturers offering electrically powered and live steam locomotives and rolling stock in ready to run, parts and kit form. Some manufacturers offer so-called Gauge 1 items in 1:30.48 scale (10 mm = 1 foot) that also run on 45 mm (1.772 in) gauge track. Gauge 1 also has its own international association.


Static Model 1:35 (nominal) 41

Only used Static Models.


L gauge 1:38 (nominal) 38

Unofficial designation of toy trains built from LEGO. Equipment can be built to differing widths in relation to the track gauge, and are becoming increasingly popular among persons who grew up with the building toy system. With Technic axles and custom train wheels, it is possible to build Lego trains wider than standard 6-stud wide to fit into any gauge like G or O gauge.


Fn2 scale 1:20.3 30/32

Used by mostly American modellers wishing to model smaller industrial prototypes, including two-footers; this is a minority scale. While 30 mm track is more prototypically accurate for 2' gauge, many modellers use 32 mm track gauge for the convenience of access to O-scale mechanisms, trucks, and track elements.


Fn3 scale 1:20.3 45

Similar to G Scale, this scale also uses 45 mm (1.772 in) gauge track, and is used for both indoor and garden railways of narrow gauge prototypes. The scale of 1:20.3 was developed to depict North American 3 ft (914 mm) gauge trains in exact proportion to their correct track gauge whilst using 45 mm (1.772 in) gauge model track. It equates to 15 mm = 1 foot (1 : 20.32) scale. Increasingly popular for both electric and live steam propulsion of model locomotives, with an ever growing range of commercially available ready-to-run models, kits and parts. Fn3 scale, together with G scale and ½ inch (1:24) scale, are commonly and collectively referred to as "Large Scale" by many modellers.


16 mm scale 1:19.05 32

This scale was first developed in the UK in the 1950s to depict 2 ft (610 mm) narrow gauge prototypes using 32 mm (1.26 in) or "O gauge" track and wheels, but really took off in popularity during the 1960s and 70s. Originally, it was mostly used as an indoor modelling scale, but has also developed as a popular scale for garden railways of narrow gauge prototypes. Some manufacturers that produce models depicting North American 2 ft (610 mm) narrow gauge prototypes have also adopted this scale for use alongside the near-compatible Fn3 (15 mm or 1: 20.32) scale on 45 mm (1.772 in) track already popular in the US. Both electric, battery and live steam propulsion is used to power model locomotives in this scale, and is supported by a growing range of commercially available ready-to-run models, kits and parts.


Wide gauge 1:26.59 or 1:28.25 53.975

Called Standard Gauge by Lionel, who trademarked the name. Other manufacturers used the same gauge and called it Wide Gauge. Not widely produced after 1940. Gauge No. 2 using track of gauge 2 in (50.8 mm) was one of the standard model gauges in 1909.


Live steam 2½ in gauge 1:24 63

At 2½ in (64 mm), this is the smallest of the "ridable" gauges. Only one or two passengers can be pulled. This was one of the first popular live steam gauges, developed in England in the early 1900s, though now less popular than the larger gauges it still has a following. A model can normally be lifted by one person.


3 gauge 1:22.6 63.5

One of the original model railroad scales standardized in 1909, a minority interest, which is undergoing a revival in the UK and in Germany (where it is known as Spur II). 64 mm (2 ½in) gauge 3 track is commercially available, as are a growing number of locomotive and rolling stock kits. The European standard of 1:22.5 scale trains on 45 mm (1.772 in) track is called II m scale, as per European narrow gauge naming conventions or G scale, its popular name.


Live steam 3 ½in gauge 1:16 89

Ridable, outdoor gauge. The gauge is 3 ½in (89 mm) the world over. Originally defined to be 89 mm 3 gauge in Europe.


SE scale 7/8 inch 1:13.71 45

Models of 2 ft. (610 mm) gauge prototypes using 45 mm (1.772 in) track. Used by folks modelling the Maine 2-footers, but increasingly also by anyone interested in very large scale models of industrial prototypes, including the many Welsh slate mines and other European operations. Although this is mostly a scratch-builders scale, there is an increasing supply of kits, parts and figures. Some modellers using 7/8 scale operate on 32 mm (1.26 in) track, used to replicate 18 in (457 mm) gauge industrial lines found in Great Britain and other countries.


Live steam 5 in gauge 1:12 127

Live steam 4¾ in gauge 1:12  121

Ridable, outdoor gauge. The gauge is 5 in (127 mm) in Europe, but 4 ¾in (121 mm) in US and Canada. For standard gauge prototypes at 5 inch, the scale is 1 1/16 inch per foot or approximately 1:11.3. Together with the 1:8 scale above, this is a popular scale for backyard railroads. Pulling power is enough for more than a dozen passengers on level tracks.


Live steam 1:8 184 or 190

Ridable, outdoor gauge, named according to the gauge in inches, and scale in inches per foot, for example

7 ¼in (184 mm) gauge, 1.5 inch scale. The gauge is 7 ½ in (190.5 mm) in the western parts of US and Canada, where the scale sometimes is 1.6 inch for diesel-type models. Private and public (club) tracks exist in many areas, among them the world's largest model railroad, Train Mountain Railroad,[1] with over 25 miles (40 km) of tracks. Powerful locomotives can pull 50 or more passengers. Narrow gauge models in this gauge can be as large as 1:3 scale.


Grand Scale 1:4 and up

254 mm and up 254 mm (10 in). Several large scales exist, but are not strictly model railroading gauges. Instead, they are used mostly in commercial settings, such as amusement park rides.

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