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Balisor
Photograph showing Balisor beacons in use on high voltage cables
Photograph showing Balisor beacons in use on high voltage cables
A spherical marker. Spherical markers are also known as aerial marker balls.
A spherical marker. Spherical markers are also known as aerial marker balls.
Markers on a line near an airfield
Markers on a line near an airfield
An overhead line obstruction warning marker near an airstrip.
An overhead line obstruction warning marker near an airstrip.