water inch

water inch
   a traditional unit of water flow, supposed to equal the flow through a circular opening one inch in diameter, assuming the flow is caused only by gravity. However, this flow rate also depends on the pressure of the water above the opening. One estimate is 14 U.S. pints per minute or 2520 U.S. gallons per day2 (this is equivalent to 6.624 liters per minute); this estimate assumes the water level is constantly 1/12 inch (1 line) above the top of the opening. Another is 500 cubic feet per day, which is much larger: 3740 U.S. gallons per day or about 9.832 liters per minute.
   The latter estimate may depend on a mid-nineteenth century British engineering definition which required the hole to be centered 1 inch and 1 line below the water surface, placing the top of the opening 7/12 inch (7 lines) below the water level. See also miner's inch.

Dictionary of units of measurement. 2015.

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  • water inch — Water Wa ter (w[add] t[ e]r), n. [AS. w[ae]ter; akin to OS. watar, OFries. wetir, weter, LG. & D. water, G. wasser, OHG. wazzar, Icel. vatn, Sw. vatten, Dan. vand, Goth. wat[=o], O. Slav. & Russ. voda, Gr. y dwr, Skr. udan water, ud to wet, and… …   The Collaborative International Dictionary of English

  • Water inch — Wa ter inch Same as {Inch of water}, under {Water}. [1913 Webster] …   The Collaborative International Dictionary of English

  • water-inch — [wôt′ərinch΄] n. a former unit of hydraulic measure, calculated as the discharge of water through a circular opening one inch in diameter and equal to about fourteen pints per minute …   English World dictionary

  • water-inch — ˈ ̷ ̷ ̷ ̷ˈ ̷ ̷ noun : the discharge from a circular sharp edged orifice one inch in diameter with a head of one line above the top edge that is commonly estimated at 14 pints per minute and that constitutes an old unit of hydraulic measure * * *… …   Useful english dictionary

  • water-inch — /waw teuhr inch , wot euhr /, n. Hydraulics. the quantity of water (approx. 500 cubic feet) discharged in 24 hours through a circular opening of one inch diameter leading from a reservoir in which the water is constantly only high enough to cover …   Universalium

  • water-inch — wa′ter inch n. hyd the quantity of water (approx. 500 cubic feet) discharged in 24 hours through a circular opening of one inch diameter leading from a reservoir in which the water is constantly only high enough to cover the orifice • Etymology:… …   From formal English to slang

  • Inch of water — Water Wa ter (w[add] t[ e]r), n. [AS. w[ae]ter; akin to OS. watar, OFries. wetir, weter, LG. & D. water, G. wasser, OHG. wazzar, Icel. vatn, Sw. vatten, Dan. vand, Goth. wat[=o], O. Slav. & Russ. voda, Gr. y dwr, Skr. udan water, ud to wet, and… …   The Collaborative International Dictionary of English

  • Water — Wa ter (w[add] t[ e]r), n. [AS. w[ae]ter; akin to OS. watar, OFries. wetir, weter, LG. & D. water, G. wasser, OHG. wazzar, Icel. vatn, Sw. vatten, Dan. vand, Goth. wat[=o], O. Slav. & Russ. voda, Gr. y dwr, Skr. udan water, ud to wet, and perhaps …   The Collaborative International Dictionary of English

  • Water of crystallization — Water Wa ter (w[add] t[ e]r), n. [AS. w[ae]ter; akin to OS. watar, OFries. wetir, weter, LG. & D. water, G. wasser, OHG. wazzar, Icel. vatn, Sw. vatten, Dan. vand, Goth. wat[=o], O. Slav. & Russ. voda, Gr. y dwr, Skr. udan water, ud to wet, and… …   The Collaborative International Dictionary of English

  • Water on the brain — Water Wa ter (w[add] t[ e]r), n. [AS. w[ae]ter; akin to OS. watar, OFries. wetir, weter, LG. & D. water, G. wasser, OHG. wazzar, Icel. vatn, Sw. vatten, Dan. vand, Goth. wat[=o], O. Slav. & Russ. voda, Gr. y dwr, Skr. udan water, ud to wet, and… …   The Collaborative International Dictionary of English

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