http://www.robertwhite.com/cgi-local/shop.pl?type=item&item=rba-precision111&categ=rw_brassdial&nav_bar=weather
Meassures the rising and falling of the atmospheric pressure.
air pressure
air pressure and weather
high and low pressure
pressure systems
high pressure systems and weather
low pressure systems and weather
atmospheric pressure and wind
wind
Coriolis Effect
land/sea breeze
what causes wind
Gases, Pressure, and Wind: The Science of the Atmosphere (Weatherwise) by 
Barometers and the measurement of atmospheric pressure. A pamphlet of information respecting the theory and construction of barometers in general, with ... the standard Weather bureau instruments .. by http://www.youtube.com/watch?v=YxH1xiNirhA&feature=player_embedded
http://www.ussartf.org/blizzards.htm