The 407113 CFM Metal Vane Anemometer has an accuracy of ±2% and measures air velocity from 100 to 6890 ft./min, 0.5 to 126 m/sec, 1.8 to 126 km/hr, 1.1 to 78.3 mph, and 1.0 to 68 knots. The meter also measures 0 to 999,900 cubic feet per minute, 0 to 999,900 cubic meters per minute, and temperatures ranging from 32 to 175°F (0 to 80°C). The anemometer includes Min/Max, Data Hold, and Auto Power Off. Includes metal vane with 3.9ft cord, 9V battery, holster with stand, and durable carrying box.