Air-Flow Tels show the air flow across sails for maximum performance. Attach with waterproof adhesive disks.Black Max attaches quickly to masts and booms on most small sailboats, including Lasers and Sunfish. Newport Tell-Tales attach to shrouds without tools, and give excellent service in both light and heavy winds.Spar-Fly masthead wind direction indicator is bright red for visibility. Needle-bearing balance provides unsurpassed sensitivity. Telo-Cat is designed especially for catamarans. Installs on the headstay bridle in seconds; easily removed for trailering.WindScribe 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. Windex masthead wind indicators with sapphire-jewel bearings are the standard of excellence around the world. Choose from Windex AV that mounts to most whip antennas, Windex 10.Sport for small boats and dinghies, or Windex 15 for cruising and racing boats 15 feet (4.6 meters) and bigger. Wind-Tels' port- and starboard-colored vanes attach to shrouds of all sizes. Effective in the lightest of winds. Wind Speed Indicators
Beijing, China
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Jack (Beijing Channel Scientific Instruments Co.,Ltd.)
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