HO scale model trains are a significant part of model railroading history, and we can partially credit the overall popularity of model trains with the rise of a convenient, tabletop scale like HO.

Atlas HO scale Alco RS11 Scale: HO (1:87.1) Price: Direct-current model with 21-pin plug, $174.95; with ESU LokSound V5 sound decoder, $289.95 Era: 1970 to 1975 (as decorated) Manufacturer: Atlas ...