O scale (or O gauge) is a scale commonly used for toy trains and rail transport modelling. Introduced by German toy manufacturer Märklin around 1900,...

scale sizes are internationally standardized, with the notable exceptions of O scale and N scale. There are three different versions of the "O" scale...

This is a list of scale model sizes, listing a variety of size ratios for scale models. Super Series - 1:1400 Scale, Modern Brands website (accessed 2017-06-21)...

Cherry Valley O Scale is a not-for-profit club dedicated to the promotion of 2-rail O-scale (1:48) model railroading, located in Merchantville, New Jersey...

challenged the predominant O scale (1:48) manufacturers such as Lionel with a fully developed line of 1:64 scale and semi-scale equipment marketed under...

1:43 scale, 1:48 scale and 1:50 scale die-cast models with O scale model trains. using Matchbox cars (1:64 to 1:100) with HO scale and S scale. mixing...

This scale is similar to O scale used in model trains and 1:50 scale will appear compatible with 1:48 scale models as produced by US manufacturers of O scale...

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. The rails...

1:43 scale is a popular size of die-cast model cars in Europe, Asia and the US. It has its origins in the British / European O scale for model trains...

mostly in O scale and S scale, to describe a "compromise" form of modelling that strives for realism while accepting the compromises in scale associated...