Dwyer^® Hand-Held Wind Meter

To operate, hold at eye level with back of the unit to the wind. The position of the white ball in the tube indicates wind speed in miles per hour. For high range use, cover the hole at the top with your finger and read. Available in English or metric. Accuracy: ±1/2 mph (±.8 km/hr) low scale; ±3 mph (±4.8 km/hr) high scale. Resolution: 0.5 mph (0.5 km/hr) low wind; 2 mph (2 km/hr) high wind. Range: 2 to 10 mph (3.5 to 16 km/hr) low scale; 6 to 66 mph (8 to 104 km/hr) high scale. Includes one tube cleaner and a vinyl case.