Editing Rain gauge (section)

===U.S. standard rain gauge===
The standard United States [[National Weather Service]] rain gauge, developed at the start of the 20th century, consists of an {{cvt|8|in}} funnel emptying into a metal graduated cylinder,<ref>{{cite web |year=2009 |title=8 Inch Non-Recording Standard Rain Gauge |url=http://www.crh.noaa.gov/iwx/program_areas/coop/8inch.php |publisher=[[National Weather Service]] Office, Northern Indiana |url-status=live |archive-url=https://web.archive.org/web/20081225234123/http://www.crh.noaa.gov/iwx/program_areas/coop/8inch.php |archive-date=25 December 2008 |access-date=2 January 2009}}</ref> {{Cvt|2.525|in}} in diameter, which fits inside a larger container that is {{cvt|8|in}} in diameter and {{cvt|20|in}} tall. If the rainwater overflows the graduated inner cylinder, then the larger outer container will catch it. When measurements are taken, then the height of the water in the small graduated cylinder is measured, and the excess overflow in the large container is carefully poured into another graduated cylinder and measured to give the total rainfall.<ref name=":02">{{cite web |author=Chris Lehmann |year=2009 |title=10/00 |url=http://nadp.sws.uiuc.edu/CAL/2000_reminders-4thQ.htm |archive-url=https://web.archive.org/web/20100615115408/http://nadp.sws.uiuc.edu/cal/2000_reminders-4thQ.htm |archive-date=15 June 2010 |access-date=2 January 2009 |publisher=Central Analytical Laboratory}}</ref> A cone meter is sometimes used to prevent [[leak]]age that can result in alteration of the data. In locations using the metric system, the cylinder is usually marked in mm and will measure up to {{cvt|250|mm|1}} of rainfall.

Each horizontal line on the cylinder is {{cvt|0.5|mm|2}}. In designs made for areas using Imperial units, each horizontal line represents {{cvt|0.01|in}} inches.