Chatani Sangyo Fun Science This is a Glass Float Thermometer Dome x Storm Glass Dome set (◍︎´꒳`◍︎) ★Glass Float Thermometer Dome★ A series that allows you to enjoy mysterious chemical changes and phenomena as interior decor. This thermometer is made using the principle discovered by Galileo Galilei that the specific gravity of a liquid changes with temperature. The glass spheres move up and down depending on the temperature. It's a thermometer that's enjoyable just to look at as interior decor (˶> <˶)♡ The actual temperature is read on the plate attached to the lowest glass sphere of the glass spheres floating in the upper part ¨̮⃝ ★Storm Glass★ In the early 19th century, it was used in Europe to predict weather information during voyages. It is made by dissolving multiple chemicals in alcohol and filling a glass container, and it is said that the appearance of the crystals changes depending on the weather. Although it cannot be used to predict accurate weather information, the liquid and crystals change uniquely depending on changes in the surrounding weather environment, so please enjoy it as an ornamental decoration ¨̮⃝ Both items appear to be in beautiful condition with no scratches or damage to the glass parts, but there are stains on the base (wooden) part of the Glass Float Thermometer Dome. Please refrain from purchasing if you are sensitive to this, as it has been stored at home (>_<) As it is a fragile item, I will carefully wrap it in bubble wrap for packaging *ˊᵕˋ* ※Items cannot be sold separately ＊3