1) Medical instrument 1) Thermometrograph 
An instrument continuously recording temperature.
instrument for recording changes in temperature
• (n.) An instrument for automatically recording indications of the variation of temperature.
(thur´mo-graf) an instrument for recording temperature variations. thermogram (def. 2). the apparatus used in thermography.
Ther'mo·graph noun [ Thermo- + - graph .] (Physics) An instrument for automatically recording indications of the variation of temperature. 
Type: Term Pronunciation: ther′mō-graf Definitions: 1. An instrument or device used in producing a thermogram.
A thermograph is a self-registering device for recording fluctuations in air temperature (thermometer). Various forms of thermograph have been made, traditionally they registered the temperature on a clockwork revolving drum sometimes with a pen which traces a curve and sometimes photographically.
[n] - medical instrument that uses an infrared camera to reveal temperature variations on the surface of the body 2. [n] - a thermometer that records temperature variations on a graph as a function of time
thermograph A self-recording thermometer that measures both air and soil temperature on a continuous display known as a thermogram.
an instrument continuously recording temperature.
thermometrograph noun a thermometer that records temperature variations on a graph as a function of time