The PTC surface temperature thermometer are small (2″ diameter) and lightweight (2 ounces) and are equipped with a cover glass and magnetic base containing a bi-metallic spring to measure the temperature of the surface. The thermometer stabilizes in approximately 2 minutes.
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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.
$515.00 – $1,235.00
Available in either standard or advanced models with built in or separate probe, this electronic psychrometer measures and records ambient conditions including air and surface temperatures, relative humidity, dew point temperature and the spread between the dew point and surface temperatures.