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cross bar, <in airfield applications>
line of lights in an approach lighting system that is arranged orthogonal to, and symmetrically disposed about, the centreline of the system and the runway
Note 1 to entry: This entry was numbered 845-11-55 in IEC 60050-845:1987.
Note 2 to entry: This entry was numbered 17-265 in CIE S 017:2011.