Differential thermometer


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a thermometer usually with a U-shaped tube terminating in two air bulbs, and containing a colored liquid, used for indicating the difference between the temperatures to which the two bulbs are exposed, by the change of position of the colored fluid, in consequence of the different expansions of the air in the bulbs. A graduated scale is attached to one leg of the tube.

See also: differential

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Man is fallen; nature is erect, and serves as a differential thermometer, detecting the presence or absence of the divine sentiment in man.
These logging models - N1092 Food Thermometer and N1001 Differential Thermometer, can store temperature readings within the instrument's memory, ready for printing-out or downloading to a PC via their own N1SW Windows software for data presentation.

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