This Galileo Measures 7.5* Tall x 1.25* Wide and has a Base that measures 2* in Diameter. It contains 4 Colored Temperature Balls Ranging In Temperature from 68 degrees to 80 degrees Farenheidt. It also shows the Temperature in Celcius on the other side of The Dolphin Charms.****Galileo Galilei- the pioneer of modern physics and astronomy- never could have imagined that the remarkable thermometer he invented four centuries ago would become one of the most attractive- intriguing- eye-catching gift items today. ****To look at a glass Galileo Thermometer is to behold not only an instrument that tells the precise temperature- but also a work of beauty and art. The Galileo Thermometer is a conversation piece that leaves a lasting impression. Few other gift items meld design and concept so effectively.****The Galileo Thermometer is a unique looking cylinder filled with colorful spheres that float in liquid and measure the correct temperature based on a fascinating scientific principal. What Galileo discovered is that spheres of different weights would rise or fall according to the temperature. In a Galileo Thermometer- the lowest floating sphere in the upper part of the cylinder tells the correct temperature.**