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gauge for indicating the level of water in e.g. a tank or boiler or reservoir

gauge for indicating the level of water in e.g. a tank or boiler or reservoir

An instrument for measuring or ascertaining the depth or quantity of water, or for indicating the height of its surface, as in the boiler of a steam engine. See Gauge.

An instrument for measuring or ascertaining the depth or quantity of water, or for indicating the height of its surface, as in the boiler of a steam engine. See Gauge.