Tag:survey_point:purpose=vertical

Often called a  Benchmark. Used to measure difference in elevation.

See survey_point for more information about survey points. See survey_point:purpose=* for other possible values.

Possible tagging mistake

benchmark=yes

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More details at taginfo

• benchmark=yes

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survey_point=benchmark

		$1%
		$1%
		$1%
		$1%

More details at taginfo

• survey_point=benchmark

If you know places with this tag, verify if it could be tagged with another tag.
Automated edits are strongly discouraged unless you really know what you are doing!