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The surveying profession uses the term ["bench mark"] only if the mark is for vertical control. The surveying profession uses the term ["bench mark"] '''only if''' the mark is for vertical control.

Among geocachers, the term benchmark is used casually to mean either a ["vertical control"] mark or a ["horizontal control"] mark. In this casual use, the term is generally spelled as one word; benchmark.

The surveying profession uses the term ["bench mark"] only if the mark is for vertical control.

benchmark (last edited 2009-03-21 21:03:18 by localhost)