Before revision: They are a traditionally a large machine that straddles a windrow of 4 feet (1.25 meters) or more high, by as much as 12 feet (3.5 meters) across.
After revision: They re a traditionally a large machine that straddles a windrow of 4 feet (1.25 meters) or more high, by as much as 12 feet (3.5 meters) across.