Sper Scientific 800012 Temperature Pen

Pen-size meter that measures humidity & Temperature, Min/Max & ∆. Technicians in HVAC, labs, industry and environmental studies can carry this sturdy metal pen anywhere for quick readings of RH (Relative Humidity) and ambient temperature. Simultaneously displays RH and temperature in °C or °F. Will also show a continually updated ∆ delta (difference) from a starting point. The pen stands upright on its base, enabling unobstructed airflow around the sensor, and recalls high and low readings. Comes in a protective foam lined metal case with a standard AAA battery and instructions. N.I.S.T. traceable certificate of compliance available.