13" Tall Galileo Thermometer / Goethe Ball Barometer Combo Unit

What is a Galileo Thermometer and how do I read it? A Galileo Thermometer is a sealed glass column containing multiple liquid filled orbs. As the temperature changes, these orbs rise and fall to indicate the current ambient temperature (within the range of 64˚F - 80˚F). Under normal conditions, the orbs will settle into two groupings toward the top and bottom of the glass column as shown to the left. To read the Galileo Thermometer, observe the metal tags hanging from each orb. The tag on the lowest orb in the top grouping displays the current ambient temperature. If all the orbs float to the top, the temperature is below 64˚F. If all the orbs sink to the bottom, the temperature is higher than 80˚F.  PLEASE NOTE: the stated height of 13" is only an approximation. This item is finished with a hand process that creates a varying finished height, which may be slightly higher or shorter than the stated height. What is a Goethe Weather Ball Barometer? A Goethe weather ball barometer is