thermoscope

/ ˈθɜːməˌskəʊp; ˌθɜːməˈskɒpɪk /

noun

a device that indicates a change in temperature, esp one that does not measure the actual temperature

My Thermoscope, being fitted somewhat at adventures, I have found at the lowest to be somewhat more than 12.

Try the experiment of concentrating on a thermoscope, by means of a burning-glass, the moon's rays.

In order to determine the effect of radiation in the cooling of bodies, Rumford employed the thermoscope referred to by Cuvier.

Torricelli's apparatus, unlike Galileo's thermoscope, represented the barometer in essentially its classical form.

The instrument shown in his sketch resembles a Galilean thermoscope.

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