Galileo thermometer, 5 vessels-buoys. Size: 28 cm. Material: glass. The Galileo Galilei thermometer is a glass flask with elements floating in a liquid that change their position depending on the change in ambient temperature. The current temperature value is determined by the lower floating vessel. Designed for interior decoration. Care instructions: Wipe clean with a dry cloth. Do not expose to mechanical or thermal influences. Keep away from moisture.