Model railroad scales Model railroad scales 1 gauge is a toy train and model railroading standard, popular in the early 20th century, particularly with European manufacturers. Its track measured 1.75 inches (44.45 mm), making it larger than O gauge but slightly smaller than wide gauge, which came to be the dominant U.S. standard during the 1920s. ...more on Wikipedia about "1 gauge"
A popular scale of model railway in the UK which represents narrow gauge prototypes at a scale of 16 mm:1 foot or 1:19.05. The most common gauge for such railways is 32 mm, representing 2 ft (610 mm) gauge prototypes. This scale is often used for model railways that run in gardens and is large enough to easily accommodate live steam models. The next most common gauge is 45 mm, which represents 2 ft 9.75 inch (874 mm) gauge prototypes; although few prototype lines were this exact gauge it can reasonably be used to model prototypes between 2 ft 6 inch and 3 ft gauge. ...more on Wikipedia about "16 mm scale"
2 mm scale is a scale used for railway modelling, largely of British subjects. It uses a scale of 2 mm on the model to 1 foot on the prototype, which scales out to 1:152. It is, therefore, similar in size to the slightly larger British N scale at 1:144 and the slightly smaller European/American N scale at 1:160; it predates both versions of N scale. The track gauge used is 9.42 mm, wider than commercial N scale. Track and wheels are exact scale replicas of those on real railways; the track is only 1mm high. ...more on Wikipedia about "2 mm scale"
4 mm scale is the most popular model railway scale used in the United Kingdom. The term refers to the use of 4 millimeters on the model equating to a distance of 1 foot (305 mm) on the prototype (1:76.2). It is also used for military modelling ...more on Wikipedia about "4 mm scale"
EM gauge is a gauge of model railway, 4 mm scale. It was developed because OO gauge was too narrow. ...more on Wikipedia about "EM gauge"
G scale is a scale for model railways, and the most popular scale for garden railways. The name comes from the German gross (meaning "big"). Originally and correctly, G scale is the use of 45mm gauge track, as used in standard gauge I scale ( NEM 010), aka 3/8" scale ( NMRA S-1), for modelling metre gauge narrow gauge railways, using the correct scale of 1:22.5. Metre gauge is the most common narrow gauge in Europe. ...more on Wikipedia about "G scale"
Gauge No 2 ...more on Wikipedia about "Gauge No. 2"
HO scale (H0 scale in continental Europe) is the most popular scale of model railway in most of the world outside the United Kingdom, where the slightly larger in scale OO gauge is most common. The name is derived from the German Halb-null ("half-zero"), because its 1:87 scale is approximately half that of O scale. ...more on Wikipedia about "HO scale"
HOe is a popular rail transport modelling scale/gauge combination widely used by European narrow gauge modellers. It refers to models of narrow gauge railways built to the world's most popular model railway scale of HO or 1:87 but using a track gauge of 9mm—the gauge used for N scale models of standard gauge railways. ...more on Wikipedia about "HOe scale"
Live steam is steam under pressure, obtained by heating water in a boiler. The steam is used to operate stationary or moving equipment. See steam engine, steam locomotive, steam roller, stationary engine, steamboat, traction engine. Live steam is also used to produce sound in steam whistles. ...more on Wikipedia about "Live steam"
Miniature railways are ground-level, large scale model railroads (railways) that haul passengers and use locomotives that are models of full sized railway locomotives, powered by diesel or gasoline engines, live steam engines or electric motors. ...more on Wikipedia about "Miniature Railways"
N scale (or N gauge) is a popular model railway standard, allowing hobbyists to build layouts that take up less space than HO scale, or pack longer runs containing more detail into a similar amount of space. The name is an abbreviation for Nine millimetres. It is also sometimes called "2 mm to the foot," (1:152) in reference to its scale. Another early N scale was also known as "OOO" or "Treble-O" in reference to O and OO scales and was 1:152. ...more on Wikipedia about "N scale"
O scale (or O gauge) is a scale commonly used for toy trains and model railroading. Originally introduced by German toy manufacturer Märklin around 1900, by the 1930s three-rail alternating current O gauge was the most common model railroad scale in the United States and remained so until the early 1960s. In Europe, its popularity declined before World War II due to the introduction of smaller scales. ...more on Wikipedia about "O scale"
OO gauge model railways are the most popular standard in the United Kingdom, being one of several 4 mm scale standards (4 mm to the foot (305 mm), or 1:76.2) in use, but the only one served by mass market manufacturers. OO uses 16.5 mm gauge track, which is inaccurate for 4 mm scale (it is accurate for HO scale). Many experienced modellers therefore find the OO standard inadequate, and they tend to model using the older EM gauge or the modern, exact scale P4 scale. ...more on Wikipedia about "OO gauge"
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OO9 is a model railway scale/gauge combination of 4 mm scale and 9 mm gauge tracks, which would be accurately to scale for a prototype (real life) track gauge of 2 ft 3 in (686 mm). It is a common choice in the United Kingdom for the modelling of narrow gauge railways whose prototype gauges lie approximately between 2 ft (600 mm) and 2ft 6 in (760 mm). A 9 mm track gauge is used by N gauge model railways, a common commercial scale, which means that a selection of wheels and mechanisms is readily available. ...more on Wikipedia about "OO9"
P4 gauge, also known as protofour, 4 mm finescale, and S4 is a model railway standard of 4 mm scale and accurate 18.83 mm gauge track. As the name implies, P4 gauge is accurately to scale for 4 mm scale modelling, while other track gauges (such as OO gauge and EM gauge) used for standard gauge prototypes are less accurate approximations. ...more on Wikipedia about "P4 gauge"
S gauge is a scale in model railroading. Modeled at 1:64, S gauge runs on two-rail track with the rails 7/8 inch (22.2 mm) apart. S gauge is sometimes confused with standard gauge, a large-scale standard for toy trains in the early part of the 20th century. ...more on Wikipedia about "S gauge"
ScaleSeven (S7) is a set of model railway standards for 1:43.5 (7 mm) scale using true-to-prototype track and wheel standards. It is principally used to model British standard gauge (4ft 8-1/2in), Irish Broad Gauge (5ft 3in), or Brunel Broad Gauge (7ft 0-1/4in). ...more on Wikipedia about "ScaleSeven"
As railways developed and expanded one of the key issues to be decided was that of the rail gauge (the distance between the two rails of the track) which should be used. The eventual result was the adoption throughout a large part of the world of a standard gauge allowing inter-connectivity and the inter-operability of trains. The distance between the inner sides of the rails in this gauge is 1435 mm (4 ft 8½ in). Currently 60% of the world's railway lines are built to this gauge. It is also named Stephenson gauge after George Stephenson, who adopted it in 1830. ...more on Wikipedia about "Standard gauge"
TT scale is a niche model railroading scale, whose name stands for Table Top. Its 1:120 scale (from a common engineering scale where one inch equals ten feet) and 12 mm gauge sizes it almost halfway between HO scale (1:87) and N scale (1:160). Its original purpose, like the name suggests, was to make a train small enough to be able to assemble and operate it on a tabletop. ...more on Wikipedia about "TT scale"
Wide Gauge was an early model railway and toy train rail gauge, introduced in the United States in 1906 by Lionel Corporation. As it was a toy standard, rather than a scale modeling standard, the actual scale of wide gauge locomotives and rolling stock varied. It ran on three-rail track that was 2 1/8 inches (nearly 54 mm) apart. ...more on Wikipedia about "Wide Gauge"
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Z scale (1:220) is the smallest commercially available model railway scale with its track gauge of only 6.5mm. Z-scale was introduced by the German model train manufacturer Märklin in 1972 Nuremberg Toy Fair. ...more on Wikipedia about "Z scale"
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