Rare Antique Reaumur Scale Thermometer Solid Brass Flip Dial Readings Ca1829 For Sale
This is a rare antique Reaumur, Fahrenheit & Celsius Wall Mount Thermometer. An estate sale find. This thermometer had been purchased by the family in an antique store in Compiègne, France. It has the label from the antique store on the back. Its constructed from heavy brass and has a flip dial which allows you to see the temperature in Fahrenheit / Celsius or Celsius / Reaumur. At the bottom, it gives four temperature views; Celsius to Reaumur (with formula) and Celsius to Fahrenheit (with formula). I have only found 1 reference to this thermometer in my research. One like it was sold on in 2011. According to the past listing it wasdesigned and made by Charles Joshua Ronchetti in 1829 and his initials CJR and the date 1829 are in the seal at the bottom center. The fine details in the brass have been worn down over the years and are hard to make out. It measures approximately 6" wide and 7 3/4" tall. It has a beautiful natural patina and looks like at some point in its life there was a white paint in the embossed areas on the front. It looks to me like the thermometer bulb is a replacement. Contact me with any questions you may have. Thanks for looking and good luck offerding.
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