The sling psychrometer obtains fast and accurate humidity readings anywhere.  It compares the reading of the wet and dry bulb thermometers on the enclosed humidity chart.  The meter eliminates the hazard of splattering mercury by using a safe and easy to read red liquid.  It features recessed thermometers in a protective plastic mounting.  The mounting also contains a water reservoir that eliminates the need to constantly re-wet the wick.  The psychrometer includes a carrying case and plastic humidity chart.

• Temperature Range:  20° – 120°F (-5° – 50°C)