water gaugen.2
/ˈwɔːtə ɡeɪdʒ/, U.S. /ˈwɔdər ˌɡeɪdʒ/, /ˈwɑdər ˌɡeɪdʒ/ 1. A gauge for measuring the depth or some other property of water.
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the world > relative properties > measurement > measuring instrument > [noun] > for measuring level in a container > esp. in boilers
gauge1799
water gauge1844
gauge-glass1849
water glass1895
1686 R. Plot Nat. Hist. Staffs. ii. 41 Choose those..into which a glass Hydrometer or water-Gage, or any other natant weighty body will sink deepest.
1706 Phillips's New World of Words (new ed.) Water-gage..an Instrument to gage or measure the Quantity or Depth of any Water.
1791 Rep. Commissioners Navigation Thames & Isis 29 All Attempts to render the Navigation complete up to Leachlade will be ineffectual..if the Proprietors of the Old Locks and Weirs, the Millers, and Renters of Fisheries, are not compelled to keep up an Head of Water at their respective Locks, Weirs, and Pens, to the Height that shall be fixed, as a Water Gauge, above the Pound Locks Sills [etc.].
1844 H. Stephens Bk. of Farm II. 316 When the boiler is observed to have got a sufficient supply—which is indicated by a float water-gauge—the discharge from the pump is turned off.
1949 Code Federal Regulations (Federal Register Division, U.S. National Archives) 372/2 Three water-gauge cocks shall be installed on each end of the boiler.
2008 S. Werner & K. O. Rothhaupt in K. M. Wantzen et al. Ecol. Effects Water-level Fluctuations in Lakes 613 144/1 Daily mean water level and water temperature were continuously received from the water gauge measuring site at the harbour.
2. A gauge that shows the pressure of a gas or vapour relative to ambient atmospheric pressure, typically by means of a U-shaped tube where the difference in the height of the water in the two arms indicates the pressure difference between them; (also) a reading given by such a gauge.A pressure of, e.g., 2 cm water gauge means a pressure in excess of atmospheric pressure equal to that of a column of water 2 cm high. One cm water gauge is approx. equal to 98 pascals, 0.98 millibar, and 0.014 p.s.i.
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1867 W. W. Smyth Treat. Coal & Coal-mining 221 In order to test the different densities of the currents on opposite sides of a brattice,..a manometer or water-gauge is employed.
1917 Biol. Bull. 32 188 The experimenter needs something better than..a rubber tube connected to a water gage to measure the pressure.
1949 Our Industry (Anglo-Iranian Oil Co.) (ed. 2) xi. 261 Liquefied gas is generally controlled by a regulator at a pressure of 10 to 12 inches water gauge.
2008 Jrnl. Wildlife Managem. 72 1688 (caption) Optimal shorebird foraging habitat is provided at a water-gauge reading of 40 cm.
This entry has been updated (OED Third Edition, September 2015; most recently modified version published online December 2021).
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