The castle and the tower of Valgiurata was completely restored by an American surveyor, that replaced the old decaying structure.

His father was Augustus Jones, an American born surveyor of Welsh descent.

American surveyors' peculiar units all consist of exact fractions of the U.S. mile.

American surveyors sometimes used a longer chain of 100 feet (30.48 m), known as the engineer's chain or Ramsden's chain.

William Douglas Wallach (1812-December 1, 1871) was an American surveyor and newspaper entrepreneur.

John Young (March 8, 1764 - 1825) was an American surveyor and pioneer.

He first heard of the La Dorada from an American surveyor.

In order to apply Western surveying methods, American surveyors were hired.

American surveyors use a decimal-based system of measurement devised by Edmund Gunter in 1620.

They used the knots the same way early American surveyors used the chaining pins, to keep track of the distance.