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Air-Flow Tels

DAV-950: $22.95

Home Grown

Lightweight, ripstop nylon Air-Flow Tels attach to sails with waterproof adhesive locator discs. No holes required. Tels show the air flow across the sails—allowing you to trim sails for maximum performance. Each kit includes 14 Tels and full instructions on where to apply them and how to read them.

Instructions

 

 

 

 

You may also need:

Spar-Fly
masthead wind direction indicator