EXTECH AN400 Pocket size Air Velocity meter and Thermometer

Measure air velocity and temperature with this rugged meter! Rotating cups provide accurate air velocity measurements in m/ s, ft/ min, mph, km/ h, and knots. Temperature is displayed in either ° F or ° C. This water-resistant meter stores up to 100 readings, and maximum and minimum values are recorded. Includes 4 AAA batteries. Range: Air Velocity, 0.9 m/ s to 35.0 m/ s, 2.5 km/ h to 126.0 km/ h, 1.4 knots to 68.0 knots, 144 ft/ min to 6, 895 ft/ min, 1.6 mph to 78.2 mph; Temperature, 32° F to 122° F ( 0° C to 50° C) . Resolution: Air Velocity, 0.1 m/ s, 0.1 km/ h, 0.1 knots, 1 ft/ min, 0.1 mph; Temperature, 0.1° F/ ° C. Basic Accuracy: Air Velocity, ± ( 2% + 0.2 m/ s) , ± ( 2% + 0.8 km/ h) , ± ( 2% + 0.4 knots) , ± ( 2% + 40 ft/ min) , ± ( 2% + 0.4 mph) ; Temperature, ± 1.5° F ( 0.8° C)