link 1.0 Djem Guerreru Inc. https://www.djemguerreru.com 21600 JOITO's https://www.joitos.com https://cdn.joitos.com/GENERAL/12/121/1216/12165576.V0.jpg 400 250 https://www.joitos.com/item/28582260/Davis%2DAir%2DFlow%2DTels%2D%2D%2DSet%2Dof%2D14 Air-Flow Tels

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.
7.94 USD 0 Electronics & computer--Marine--Instruments