Pawaca 17" Galileo Thermometer and Multicolor Glass Spheres Fluid Barometer in Centigrade Home Decoration Gift

Galileo Thermometer, referring to the Italian scientist Galileo based on material expansion and contraction principle developed for measuring the temperature of the tool, which after several improvements to become our commonly used temperature measuring device.

The Principle of the Thermometer
The density of the liquid varies with temperature and the amount of liquid filled in each glass bulb varies, so its weight is also different. Temperature upper body, the thermometer in the liquid density becomes smaller, the heavier the ball slowly sink to the bottom.

How to Read the Temperature
The lowest temperature of the ball in the reading sphere that floats above the thermometer shows the correct current ambient temperature.
A. Floating in the top of the ball The lowest ball shows the temperature is the current temperature.
B, if all the balls float on top of the thermometer, the current temperature is below the lower limit of the measurement range.
C, if all the balls are sinking at the bottom of the thermometer, the current temperature is above the upper limit of the measuring range.

Dimension (D*H): 1.85" X 17.32" / 4.7 X 44cm


Package include:
1 x Galileo Themometer