Mjolnir Wind Meter
Designed, tested and calibrated in a professional wind tunnel at the Technical University of Denmark, the one piece, durable plastic rotor has a low friction bearing and uses a revolutionary electronic free method of communicating with the magnetic field sensor in your phone.
• Wind range: 2m/s to 20m/s
• Precision: +/-4%
• Size: 20x112x59mm
• Includes neoprene storage pouch with carabiner
• Compatible with:
iPhone 4, 4S, 5, 5C, 5S, 6 & 6Plus, iPad 2, 3, 4, Mini & Air, iOS6 and above.
Samsung Galaxy S3, S4 & S4 Active, HTC One, Google, Nexus 5, Android 2.3.3 and above
(Phone not included)