Cheap Extech Instruments EN300 Hygro-Thermo-Anemometer-Light-Sound Meter
This environmental meter combines five professional meters into one convenient and handheld package. A low-friction ball bearing mounted wheel designed allows for accurate readings of air velocity. Humidity is measured wit Anemometer, humidity meter, light meter, thermometer, and sound level meter in one unit Large LCD simultaneously display temperature and air velocity or relative humidity Auto power off after periods of non-use Low battery and overrange indicators Tripod-mountable
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