For many American families, Christmas ... between the train track rails. The gauge of an O scale train is 1.25 inches or 1¼ inches. The most popular train sizes are O scale and HO scale ...

Alfred Cappelli Jr. (right), owner of Cappelli's Hobbies at 313 Market Street in Old City, says grown-ups who remember a model train circling the Christmas ... making HO-scale locomotives, started ...