G scale

Large scale or G scale is a track gauge for model railways which, because of its size and durability, is often used outdoors. These garden railways use a fixed track gauge of to represent a range of rail transport modelling scales between narrow gauge, metre gauge, Playmobil trains, and standard gauge. These scales all use the same track and wheel profiles, allowing different scales of models to be operated together.


G scale was introduced by Ernst Paul Lehmann Patentwerk under the brand name LGB and was intended for indoor and outdoor use. Lehman Patentwerk, founded in 1881, started producing LGB in 1968. The remains of the company were bought by Märklin and production of certain items continues.
The G name comes from the German word groß meaning "big". More recently some people have come to interpret it as standing for "garden scale".

G scale versus G gauge

G gauge track has a spacing of 45 mm between the railheads have rails only apart. Although often built with standard-sized doors, a narrow-gauge train is in most other respects smaller than its standard-gauge counterpart: its cars are generally narrower and shorter, allowing them to navigate more sharply curved and lightly built tracks.
Model trains are built to represent a real train of standard or narrow gauge. For example HO scale models all use 16.5 mm gauge track to represent standard gauge trains while a narrower-gauge track such as 9 mm N gauge is used to represent real narrow gauge.
G model railways depart from this and always use the same gauge with the trains instead built in different sizes depending on whether they are intended to represent standard-gauge or narrow-gauge trains. Because of this it might be more correct to speak of "G gauge" rather than "G scale" since the consistent aspect is the gauge,, but the term "G scale" is used when 1:22.5 is used.
The 45 mm gauge originated from 1 gauge or "gauge one" which was first used in Europe and England and used to model standard gauge trains in the scale of 1:32.
LGB were first to adopt the term G scale and used the gauge of to model 1,000 mm gauge European trains in 1:22.5 scale.
Below are some typical scales with more specific terms that all run on G gauge's 45 mm gauge track:

Locomotives and rolling stock only

LGB and numerous other manufacturers produce track made of brass which can remain outside in all weathers – a quick wipe and it is ready for use. Track can also be obtained in less expensive aluminium as well as oxidation-resistant, though more expensive, stainless steel.