China (Mainland) Sandglass And Galileo Thermometer

Specifications: This fascinating, functional instrument is the point at which science meets art. Four hundred years ago Galileo discovered that specifically weighted floating bubbles would predictably rise or sink in a liquid as the temperature of that liquid changed.

These decorative glass reproductions of Galileo\'\'s discovery have glass floats precisely weighted in .006 gram increments suspended in a clear, environmentally safe, nontoxic liquid. Simply read the tag on the lowest floating bubble to read the temperature.