Davis Turbo Meter Electronic Wind Speed Indicator

A Great Wind Speed Tracker

Track the wind with this awesome wind speed indicator brought to you by Outdoor Fitness and Fun! It is based on the idea that a freely turning turbine will rotate at a speed directly proportional to the wind speed. This wind speed indicator features a switch that selects between four different scales of knots, feet per minute, and more. 

Details:

• Based on the principle that a freely turning turbine will rotate at a speed directly proportional to the wind speed
• To ensure maximum sensitivity and accuracy, the turbine is suspended on sapphire jewel bearings, and its rotation is sensed by an infrared light beam which adds no friction
• A handy switch selects between four different scales knots, feet per minute, meters per second, and miles per hour
• Unit is compact size (2.6 in. x 4.7 in. x .7 in. 12cm) and light weight ( 3oz., 85g)
• Measures wind speed from 0 - 99.9 mph