Lum Woodruff, a resident of Ann Arbor, Michigan, who reported weather observations to the Smithsonian Institution, patented a portable barometer that proved to be extremely popular. Its key feature ...

A barometer is a tool meteorologists use to measure atmospheric pressure, which is defined using millibars (mb). The layers of air in the Earth’s atmosphere has weight to it - which is pulled toward ...

FARGO — The barometer is one of the basic instruments of meteorology. It is used to measure air pressure. The word comes from a combination of two Greek words; "baro," meaning weight, and "meter," ...

This barometer has an ornate oak case with a profile bust of George Washington covering the cistern. The inscription on a metal plate at the top reads “BENJN PIKE JUNR” and “294 BROADWAY / NEW YORK.” ...