In our HO Train Collection, you determine the world: the era, the Railroad, its schedules & purposes, the mountains, rivers, forests, mines, farms & people, literally everything, to whatever degree of detail you desire.More people model with HO than in all other Scales combined & for good reasons. An HO scale model train is about 1/87 scale to a real life train, and your scenery and accessories will fit the same scale. A Model Train Locomotive headlight blazes to life and rails gleam in the darkness. The ground shakes as powerful model railroad locomotives inch forward, fighting to get their heavy train past the signals and onto the main line. You can hold a locomotive or car in one hand comfortably without fully covering it (which is more likely to be N scale). Using two hands to hold one might indicate a G or O scale model. HO Scale Trains.