'(<a href="http://www.j-archive.com/media/2007-01-02_DJ_16.jpg" target="_blank">Cheryl of the Clue Crew reports with a hygrometer.</a>)  Calculated from the difference between the wet & dry thermometers, a hygrometer measures this two-word weather term'
relative humidity
MEASURING UP: Calculated from the difference between the wet & dry thermometers, a hygrometer measures this two-word weather term
Calculated from the difference between the wet & dry thermometers, a hygrometer measures this two-word weather term
Calculated from the difference between the wet & dry thermometers, a hygrometer measures this two-word weather term
MEASURING UP
relative humidity
MEASURING UP