Galileo Thermometer and Barometer Combo
The Galileo thermometer is 11" and features 5 multi-colored spheres. The spheres will float up and down according to changes in the temperatures. When the temperature rises the spheres will sink and inversely when the temperature falls the spheres will rise due to changes in the specific gravity of liquids.
The Barometer features the world globe etched in the glass. The liquid in the thin arm on the side will rise and fall based on the air pressure and it will let you know if stormy weather is on the way.