thermometrograph

from WordNet (r) 3.0 (2006)

thermometrograph
    n 1: a thermometer that records temperature variations on a
         graph as a function of time [syn: {thermograph},
         {thermometrograph}]

from The Collaborative International Dictionary of English v.0.48

Thermometrograph \Ther`mo*met"ro*graph\, n. [Thermo- + Gr. ?
   measure + -graph.] (Physics)
   An instrument for recording graphically the variations of
   temperature, or the indications of a thermometer.
   [1913 Webster]