Galileo Thermometer, large
Large (44cm) size Galileo 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.) Temperature range is 18 - 34. best to keep this indoors out of continuous direct sunlight. We stock the small size as well (28cm).