distance markers

distance markers

Distance (range) markers.i. Frangible markers placed on the sides of runway indicating the remaining runway length available in thousands of feet. These have black background with numerals painted in fluorescent orange/red color.
ii. A reference marker indicating distance, particularly on a radar indicator to indicate distance of a target from the radar antenna. On a PPI (plan position indicator), it is usually one of a series of concentric circles. Also called range markers.