The AN300-NIST from FLIR Extech is a large vane thermo-anemometer for measuring air flow and temperature, supplied with battery, calibration certificate and case.
The AN310-NIST from FLIR Extech is a large vane anemometer/psychrometer for measuring air flow, supplied with battery, calibration certificate and case.
The AN320-NISTL from FLIR Extech is a large vane anemometer/psychrometer for measuring air flow, supplied with battery, calibration certificate and case.