Scale photos have a large subject thrown into contrast with something small, usually a person, to highlight the subject's grand size.  This is the opposite of Break the Rules: Small Subject, in which the subject is the small person.

See also how expert photgraphers portray Scale, Scale 2, Scale 2007.
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Boy Scout Troop 174, Yorktown, NY.  Scouting Photography Pages at  http://troop174.info