Psychrometer/Anemometer
Manufacturer's Link: http://sperscientific.com/brochures/840034.pdf
This unique instrument combines the features of an anemometer and a psychrometer. Also calculates air volume and BTU capacity. Excellent for HVAC, IAQ and environmental work. Auto ranging with air velocity in m/s or ft/s, air volume in CFM or m³/sec and temperature in °C or °F. Features min/max/ave, hold, auto power off, LCD backlight and a computer interface. The probe detaches for easy replacement and repair. Comes in a hard carrying case complete with a probe, tripod mounting screw and 4 AAA batteries. Weight: 10oz (280g). Dim: meter 7" x 3" x 1 1/2" (175 x 75 x 35mm), sensor head diameter 3" (75mm).