Radio control fixed wing plane model inclinometer part aileron angle meter accessories. A sponge is attached to the inside of the jaws, which can effectively protect the rudder of the fixed wing from damage. The angle measurement range is 0-50 degrees, covering all angles required for . Both sides can read the value very accurately. Smooth and reduce errors. Weight:45.6g How to make aileron at the horizontal position? If "0" in Angle Meter is not at the center, please move the beside round plaste wiggly to adjust it. Color:Black Material:Aluminum Plastic Package Contents: 1 * Aileron Goniometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.