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O scale
also called 7 mm scale and has 3 more synonyms

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  1. one of the scales defined by the NEM as 1:45 scale

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on March 23, 2009
  2. a scale commonly used for toy trains and model railroading

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on March 23, 2009
  3. Originally introduced by German toy manufacturer Märklin around 1900, by the 1930s three-rail alternating current 0 gauge was the most common model railroad scale in the United States and remained so until the early 1960s

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on March 23, 2009
  4. In Europe, its popularity declined before World War II due to the introduction of smaller scales

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on March 23, 2009
  5. Britain stuck to a lower voltage direct current

    Source: Wikipedia Unhappy with this fact? more info
    created by user picturefactobot on March 23, 2009
Displaying the top 5 of 14 facts in total. Show all 14 factsShow 3 more or all 14 facts
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