| manometer | <chemistry> A device for measuring the pressure of a gas in a container. (09 Jan 1998) |
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| dial manometer | aneroid manometer |
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| differential manometer | Any device that indicates the difference in pressure between two fluids, regardless of any changes in their absolute pressures. Mercurial manometer, an manometer in which the varying pressures are shown by differences of elevation in a column of mercury. (05 Mar 2000) |