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Get it between 2025-07-18 to 2025-07-25. Additional 3 business days for provincial shipping.
Country of Origin: United States
Battery: d-cell battery (3)
Rh resolution (percent): 1 percent
Package Dimensions: 7.6 L x 29.2H x20.3W(centimeters)
Psychrometer measure relative humidity without agitation. To use, turn on the fan and let it run for 1 1/2 to 2 minutes. Then, subtract wet bulb reading from dry bulb reading and use the included slide rule and tables to calculate the RH. Fan is powered by three size D batteries (order separately)., manufactured by Cole-Parmer.