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The scale ratio of a model represents the proportional ratio of a linear dimension of the model to the same feature of the original. Examples include a 3-dimensional scale model of a building or the scale drawings of the elevations or plans of a building. [1] In such cases the scale is dimensionless and exact throughout the model or drawing.
The next largest scale range, G scale (1:22.5) in the US and 16 mm scale (1:19.05) in the UK, and as large as 1:12 scale, is too small for riding but is used for outdoor garden railways, which allow use of natural landscaping. G scale is also sometimes used indoors, with the track mounted adjacent to walls at eye level of standing adults.
1:152: 2.005 mm 2mm scale / British N scale railway modeling. 1:150: 2.032 mm: Model railways (Japanese N) Used by Heller for model ships, and proposed by the Japanese to supersede 1:144 scale trains. Models which are commonly made in scale at 1:150 are commercial airliners - such as the Airbus A320, Boeing 777 all the way to the jumbo jets ...
Referred to as 1:10, 1:20, 1:30,1:40, 1:50 or 1:60 scale. [2] Typically in civil engineering applications, 1:10 (1″=10′) is used exclusively for detail drawings. 1:20 and 1:40 scales are used for working plans. 1:60 is normally used only to show large areas of a project.
Fn3 scale, together with G scale and 1 ⁄ 2 inch (1:24) scale, are commonly and collectively referred to as "Large Scale" by many modelers. Fn2 scale: 1:20.3: 30 mm or 32 mm Used by mostly American modelers wishing to model smaller industrial prototypes, including two-footers; this is a minority scale.
A graphical or bar scale. A map would also usually give its scale numerically ("1:50,000", for instance, means that one cm on the map represents 50,000cm of real space, which is 500 meters) A bar scale with the nominal scale expressed as "1:600 000", meaning 1 cm on the map corresponds to 600,000 cm=6 km on the ground.
Generally, 1 gauge equipment works out to approximately 1:32 scale (roughly 10 mm = 1 foot). G scale at 1:22.5 means the 1 gauge track represents 1,000 mm (3 ft 3 + 3 ⁄ 8 in) metre gauge track. Such railways are to be found in, among other places, Switzerland, the inspiration source for many commercial G gauge models.
HO or H0 is a rail transport modelling scale using a 1:87 scale (3.5 mm to 1 foot). It is the most popular scale of model railway in the world. [1] [2] The rails are spaced 16.5 millimetres (0.650 in) apart for modelling 1,435 mm (4 ft 8 + 1 ⁄ 2 in) standard gauge tracks and trains in HO.