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$54.00 – $725.00
The Dickson TH8P3 is a portable device which automatically records the air temperature (-20-120°F) and humidity (0-110%) 24-hours/day, seven days per week, providing a permanent record, even when you can't be on-site.
The US Weather Bureau Psychrometric Tables are used for determining the relative humidity and dew point temperature from the dry and wet bulb temperature readings on sling or battery-powered psychrometers. The tables cover the range of 23.0 to 30.0 inches barometric pressure.