The meaning of Thermoscopes and additional information.

Thermoscope(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.

Thermoscopic(a.) Of or pertaining to the thermoscope; made by means of the thermoscope; as, thermoscopic observations.