Bel-Art H-B DURAC Galileo Thermometer; 16 to 36C (60 to 100F), 11 Spheres, 24 in.

H-B DURAC Galileo Thermometer; 16 to 36C (60 to 100F), 11 Spheres, 24 in.

Galileo Galilei discovered when a liquid’s temperature increases, its density decreases. His findings inspired these unusual and interesting thermometers with colorful spheres which rise and fall to indicate temperature.

• Decorative, functional thermometers are a great conversation piece perfect for the home or office
• Sealed glass cylinder contains a clear liquid and several glass spheres of varying densities
• Tag on the lowest sphere in the top group indicates the current temperature