Version 1.1
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Page 2
1.
Introduction
Thank you for your purchase of the Ambient Weather WS-YG501 Galileo Thermometer, Hygrometer
and Glass Fluid Barometer. The following is a guide for preparation, care and operation of your
traditional barometer and thermometer.
2.
Preparation
You will need food coloring to color the water in the storm glass. Any color is fine, based on personal
taste.
3.
Care and Cleaning
Avoid use of harsh household cleaners and coarse paper towels, which can damage the lacquer or
glass.
Do not install the barometer and thermometer outside. It is intended for indoor use only.
4.
Storm Glass Barometer
4.1
How the storm glass works
The concept that 'decreasing atmospheric pressure predicts stormy weather' was postulated by Lucien
Vidie - and it's the basis for a weather prediction device called a storm glass or liquid barometer. It
consists of a glass container with a sealed body, half filled with water.
A narrow spout connects to the body below the water level and rises above the water level, where it is
open to the atmosphere. When the air pressure is lower than it was at the time the body was sealed, the
water level in the spout will rise above the water level in the body and when the air pressure is higher,
the water level in the spout will drop below the water level in the body.
