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The proportion ratio between a model and its real-world prototype.
Scale refers to the size relationship between a model and its prototype, expressed as a ratio. For example, HO scale (1:87) means the model is 1/87th the size of the real thing. Scale affects not just locomotives and cars but also figures, structures, vehicles, and scenic elements. Maintaining consistent scale throughout a layout is essential for realistic appearance.
The distance between the inside edges of the rails on model railroad track.
The most popular model railroad scale at 1:87 proportion, running on 16.5mm gauge track.
A popular smaller scale at 1:160 proportion, ideal for limited spaces, running on 9mm gauge track.
A larger scale at 1:48 proportion popular for its impressive detail and presence.