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Air Thermoscope

L.H.16. (old deparmental catalogue number in aluminium paint). MANU Unsigned. circa 1850 Glasgow, Scotland. DES after SANTORIO,Santorio (SANCTORIUS or SANTORIUS) 1612 Italy DES after GALILEI,Galileo. 1593 Padua, Italy. This air-thermoscope was used to demonstrate changes in temperature by the expansion or contraction of air in the upper bulb, which caused the rise and fall of liquid in the tube.