"Pagoscope Device To Prevent Freezing By Georges Truffaut In Versailles "
In cast iron, the Truffaut pagoscope was once a blessing for winegrowers and horticulturists with its system of two thermometers to prevent the risk of frost. Indeed, one of the two thermometers was connected by a wick to a container filled with water which is located at the back and the difference in temperatures obtained by the two thermometers made it possible, according to the curve, to calculate the possible morning frosts to be expected for then turn on the heating devices then. This model is in used condition but it is important to note that it has these two original thermometers.
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