Bible Dictionaries
Thermoscope

Webster's Dictionary

(n.) An instrument for indicating changes of temperature without indicating the degree of heat by which it is affected; especially, an instrument contrived by Count Rumford which, as modified by Professor Leslie, was afterward called the differential thermometer.

Bibliography Information
Webster, Noah. Entry for 'Thermoscope'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​t/thermoscope.html. 1828.