MIL-L-7158E, MILITARY SPECIFICATION: LIGHT, BEACON, ROTATING, 24-INCH (15-SEP-1969)

MIL-L-7158E, MILITARY SPECIFICATION: LIGHT, BEACON, ROTATING, 24-INCH (15-SEP-1969)., This specification covers 24 inch, rigid, drum-type, rotating beacon lights for use by the Department of Defense and the Federal Aviation Agency in locating airports and airways.