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Sling Psychrometer
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For rapid determinations of the wet and dry bulb temperatures, from which the relative humidity can be derived using tables (see WL1280C on preceding page). Two 9" long matched Fahrenheit thermometers, one with a wick attached to the bulb, are mounted in a metal frame with a folding handle and swivel, enabling it to be whirled rapidly by hand. The results obtained with the psychrometer are more accurate than those obtained with a stationary wet and dry bulb hygrometer. The thermometers have a range of 20 to 120 °F with 1° intervals. Instructions and tables are included.
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Indoor/Outdoor Thermometer
Rain Gauge, E-Z Read™ Jumbo
Weather "Mini" Kit Instrument Pack
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