The Kestrel 4200 Pocket Air Flow Tracker makes tech’s jobs even easier with automatic humidity ratio readings and calculator-free cfm readings. The 4200 accurately measures: volume airflow, humidity ratio, relative humidity, air velocity, temperature, pressure, dewpoint, wet bulb temperature, and more. Plus it logs 2,000 data points and comes with a NIST-traceable Certificate of Conformity.

Kestrel Pocket Weather Meters