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Vintage 1940s Sentinel Fever Thermometer

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This is a really cool little item. It is a Sentinel "certified" fever thermometer made by the B-D Rutherford Co. It is in perfect shape, and comes in it's original box. The thermometer (Mercury-dangerous stuff and no longer in use) fits into its own glass tube with a metal top and pocket holder. The box also contains a B-D Certificate of examination with serial # 79494, and stamp dated Dec 5 '46.
Here is what Wikipedia says about Mercury thermometers:

*A mercury-in-glass thermometer, invented by German physicist Daniel Gabriel Fahrenheit, is a thermometer consisting of mercury in a glass tube. Calibrated marks on the tube allow the temperature to be read by the length of the mercury within the tube, which varies according to the heat given to it. To increase the sensitivity, there is usually a bulb of mercury at the end of the thermometer which contains most of the mercury; expansion and contraction of this volume of mercury is then amplified in the much narrower bore of the tube. The space above the mercury may be filled with nitrogen or it may be less than atmospheric pressure, which is normally known as a vacuum.
This is an awesome little piece of America's scientific and medical history, it is not meant to be used and is poisonous. It is a collectors item, or would be very cool as a part of an assemblage.

Vintage 1940s Sentinel Fever Thermometer


  • Materials: glass, mercury, paper
  • Only ships within United States.
  • Feedback: 1275 reviews
  • Favorited by: 1 person