What is the measurement of a G scale train in inches?

G scale trains are typically modeled at a ratio of 1:22.5, which means that one foot in the real world is represented as approximately 2.2 inches in the model. In terms of track gauge, G scale trains use a track width of about 1.75 inches, which corresponds to the standard gauge of 4 feet 8.5 inches in real life. Overall, G scale is popular for outdoor garden railways due to its larger size.