Davis Instruments Air-Flow Tels Sail Wind Indicators, Set of 14

The Davis Instruments Air-Flow Tels are lightweight, ripstop nylon telltales that attach directly to a sailboat's sails to show airflow across the sail surface in real time. Seeing how air moves across the sail lets a sailor trim for maximum performance, adjusting sheets and sail shape until the telltales stream smoothly rather than fluttering or stalling. Each kit includes 14 individual Tels along with full instructions covering where on the sail to apply them and how to read their movement once underway.

Installation requires no holes or sewing: each Tel attaches using a waterproof adhesive locator disc, so it can be applied cleanly to the sail cloth and will hold up to on-water conditions. The Tels are made from a lightweight ripstop nylon material, chosen so they respond readily to light air movement without adding drag or weight to the sail. This makes the Davis Instruments Air-Flow Tels a straightforward, low-cost way for sailors to visualize and improve sail trim on any sailboat.

Specifications

• Brand: Davis Instruments
• Manufacturer Part Number: 950
• Product Name: Air-Flow Tels
• Type: Sail Wind Indicator
• Category: Wind Indicators
• Material: Nylon
• Color: As Shown
• Number of Tels Included: 14
• Attachment Method: Waterproof adhesive locator discs, no holes required
• Item Dimensions: 8 x 4 x 2 inches
• Weight: 0.04 pounds
• Includes: Full instructions for placement and reading

Frequently Asked Questions

What are the Davis Instruments Air-Flow Tels used for? They are telltales that attach to a sailboat's sails to show how air is flowing across the sail surface, helping a sailor trim the sails for maximum performance.

How many Tels come in the Davis Instruments kit (part number 950)? The kit includes 14 individual Air-Flow Tels, along with full instructions on where to apply them and how to read them.

Do I need to drill or sew holes in my sails to install these? No. The Davis Instruments Air-Flow Tels attach using waterproof adhesive locator discs, so no holes or sewing are required.

What material are the Air-Flow Tels made from? They are made from lightweight, ripstop nylon, which responds readily to airflow without adding drag or weight to the sail.

How are the Air-Flow Tels attached to the sail? Each Tel is applied to the sail cloth using a waterproof adhesive locator disc included in the Davis Instruments 950 kit.

What size are the Air-Flow Tels? The Davis Instruments Air-Flow Tels kit measures 8 x 4 x 2 inches as packaged.

How much does the Air-Flow Tels kit weigh? The Davis Instruments Air-Flow Tels (part number 950) weighs 0.04 pounds.

Are instructions included for placing and reading the Tels? Yes, the kit includes full instructions covering where on the sails to apply the Tels and how to read their movement while sailing.

Will these Air-Flow Tels work on any sailboat? The Davis Instruments Air-Flow Tels are designed to attach to sail cloth in general and are not restricted to a specific boat make or model.

Are the adhesive locator discs waterproof? Yes, the Air-Flow Tels use waterproof adhesive locator discs designed to hold up in on-water sailing conditions.

What color are the Davis Instruments Air-Flow Tels? The Air-Flow Tels are supplied as shown in the product listing for part number 950.