B.B.T. intermediate air-mail landing floodlight; 180-deg., 11-element Fresnel lens, with diagonal joint; weatherproof housing; 5-kw. incandescent lamp; landing illumination is provided in radius of 1000 ft.; advantages of using single floodlight unit.
New airport light
Aero Digest
Aero Digest ; 12 , n 3
1928
1 Fig.
Article (Journal)
English
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