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Reed level

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This is an old revision of this page, as edited by Eagleash (talk | contribs) at 22:26, 11 September 2016 (twk ref). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Water is poured into the center top of the reed grass. The total amount of water, as illustrated by A(100%), needs to be equally distributed across B1 and B2. Equal output at both sides indicates that the reed is horizontally leveled.

A reed level is an Arabic invention for determining level for the purpose of construction. A hole is put through a long straight reed and water is poured into the center. When the flow out of both sides is equal, the reed is level.[1] The device serves the same purpose as a spirit level.

References

  1. ^ Hill, Donald R.; al-Hassan, Ahmad Y. "Engineering in Arabic-Islamic Civilization". history-science-technology.com. Retrieved 11 September 2016.


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