Factory Supply Fiberglass Aircraft Warning Sphere, Power Line Aircraft Marker Ball

Aviation obstruction marking sphere is designed to provide daytime visual warning or nighttime visual warning if comes with reflective tape, for electricity transmission line and overhead wire for aircraft pilots, especially cross river high voltage transmission lines. RedDot OMARK power line marker ball is made of high-grade Fiberglass Reinforced Plastics (FRP), diameter of 600 mm and 800 mm are available to meet different customers’ needs.

 A marking sphere should be of one color such as aviation orange, white and red. Generally, the marking spheres are placed on the highest line. Where there is more than one line at the highest level, white and red, or white and orange spheres should be displayed alternately. This alternating color scheme provides the most conspicuity against all back ground.


Our warning spheres are composed of two hemispheres with aluminum alloy clamps. These clamps designed depending on the client’s earth wire dimensions. All other hardware is made from stainless steel and provided with spring washers and lock nut which prevent the sphere from slipping. We also provide an easy-to-install guide along with the instrument.


The warning spheres are available in the following colour combinations as per requirements of various aviation regulations world wide.