16th century weather technology.
Even after 4 centuries the Galileo Thermometer still brings an enchanting allure that captures everyone's attention. Colorful bubbles will float up or down to tell the room's current temperature. Reading it is very simple just spot the most bottom floating bubble and look at the tag. A storm glass Globe Barometer is also included in the set that helps predict the weather. Though both are not as accurate as their modern counterparts they still give pretty good readings and will certainly make any desk look interesting.