TSI VelociCalc 8386 Multi-Parameter Ventilation Meter
Talk about feature packed -- this little instrument is jammed. The VelociCalc Plus simultaneously measures and logs velocity, temperature, static pressure, Pitot tube readings and humidity, and calculates volumetric flow rate, dew point, wet bulb temperature and heat flow. Multiple sensors but one easy-to-use forty-inch telescoping probe. The rental unit comes with custom software.