Sper Scientific: Dew Point/RH/Temperature Pen
Made of sturdy metal, the 1.7-ounce dewpoint/rh/temperature pen enables quick readings of rh and temperature in Celsius or Fahrenheit, and will also display a continually updated delta (difference) from starting point. It has a backlit display. The pen stands upright on its base, enabling unobstructed airflow around its sensor, and recalls high and low readings. A pocket clip provides easy portability, and a protective foam-lined metal case offers storage protection.