1. By keagan Regner

2.  Evangelista Toricelle is credited with inventing the barometer in 1643.  Gasparo Berti built a water barometer between 1640 and 1643.  It measures air pressure.

3.  On the Tower of the Winds on the ancient Roman agora in Athens there was a wind vane in about 50 BC.  The weather vane shows the direction of the wind.

4.  Thermometer  In 1724 Daniel Fahrenheit invented the mercury thermometer.  In 1742 Anders Celsius invented the Celsius thermometer.  A thermometer measures the temperature.

5.  Dr. John Robinson invented the anemometer in 1846. It was a four cup design.  John Patterson developed the three cup version in 1926.  The anemometer measures wind velocity.

6.  The first records of rainfalls were kept by the ancient Greeks about 500 BC.  The much later cheugugi of Korea was the world's first gauge, other sources say that Jang Yeong-sil developed or refined an existing gauge.  The rain gauge measures the amount of precipitation.