Reads wind speed in mph, knots, feet per minute and meters per second. Pocket-size meter has a free turning turbine that rotates at a speed directly proportional to the wind speed. To ensure maximum accuracy, the turbine is suspended on jewel bearings, and its rotation is sensed by an infrared light beam which adds no friction. A three digit display is used for extra resolution and provides excellent viewing contrast in bright sunlight.
Includes a wrist lanyard, protective case and instruction manual. Operating temperature is 32°F to 122°F. Dimensions: 1.16"H x 2.6"W x 4.65"L. Three AAA batteries are required but not included.