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General Tools EP8709 Calibratable Multi-Function Digital Psychrometer, Wet Bulb Capable Multi-Function Wet Bulb Capable sold2025 Salmue Practical Jewelry Gold TestingGeneral Tools EP8709 Calibratable Multi Function Digital Psychrometer, Wet Bulb Capable ' Temperature Humidity Meter, Temperature and Humidity, 0 Percent to 99. 9 Percent Relative Humidity Range, + 3 Percent From 5 Percent to 95 Percent Humidity Accuracy, 14 Degrees to 122 Degrees Temp. Range (F), + 1. 8 Degrees , + 3 Percent RH Temp. Accuracy (F), 0. 1 Percent Humidity Resolution, Sensor Type Capacitance, Display LCD, Bar Graph No, Memory No, Battery