Hello, I'm the OUTDOOR PROFESSOR from DiscoveringTheOutdoors.com/ Here's your outdoor tip on using a barometer. Turn on the TV or radio or maybe the Internet and you can get all the weather information that you need. There’s some truth to this statement, but an analog barometer is still an accurate weather forecaster for your specific location. Its job is to measure the rising or falling air or atmospheric pressure forecasting the weather usually about 12 hours in advance. The pressure is shown on your barometer's dial in "inches" (inch Hg). The older barometers measured the pressure by the rise or fall of a column of mercury. The mercury barometer was invented back in 1643 by a pupil of Galileo named Evangelista Toricelli. Meteorologists use "millibars" in charting atmospheric pressure and your barometer has a second scale or ring which reads in millibars (mb) in the United States. Standard air pressure at standard elevation (sea level) at 15°C and 45° latitude is 29.92 inches o
