Galileo Thermometer - 44cmGalileo Thermometer, the kind invented by the man himself, and the first objective means of measuring temperature. It's a beautiful object as well. The floating, coloured balls in the special liquid (paraffin oil base) are calibrated to fall as the temperature rises the lowest floating ball shows the correct temperature (within 2 degrees C.). Best kept indoors out of continuous direct sunlight. 44cm
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