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WindScribe 

by Davis Instruments

Ultrasonic wind meter uses patented technology to read current wind speed, highest positive speed (headwind), lowest negative speed (tailwind), 5-second average, and running average.

Select from mph, km/h, fpm, m/s, f/s, or knots, plus temperature and wind chill in tenths of °F or °C. Sensitive to breezes as low as 0.4 mph, yet withstands winds as high as 150 mph.  Includes replaceable 3-volt lithium battery, lanyard and mounting bracket. Battery lasts up to 600 hours.

SPECIFICATIONS

• Power:  CR2032, 3v lithium cell 
• Battery life:  600 hours
• Operating Temperature:  -4°F to 122°F
• Storage Temperature:  32°F to 122°F
• Case Material:  ABS Plastic
• Tripod & Bracket Mount: 1/4" x 20
• Dimensions:  5" x 3" x 0.9"
• Weight:  4 oz.