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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 are calibrated to fall as the temperature rises - the lowest floating ball shows the correct temperature (within 2 degrees C.) Temperature range is 18 - 28. best to keep this out of continuous direct sunlight. We stock the small size as well (28cm).