INSTRUMENTS
url1
url2
url3
url4
url5
url6
url7
url8
url9
url10
url11
url12
url13
url14
METEOROLOGY
Aneroid or mercury BAROMETERS measure
atmospheric pressure. Alcohol or mercury
THERMOMETERS measure temperature.
HYGROMETERS are made with hair or synthetic fibers and
measure humidity.
ANEMOMETERS measure wind speed and direction.
RAIN GAUGES measure rain quantity. All these instruments are
digital or electronic.

Encyclopedia, The meteorology
Orders Through