Two for more different types of items having a common mounting or mounted on each other which together form a portion of a light signal receiver-transmitter.
NSN 6145-01-077-8745
NSN 6135-01-398-5922
NSN 5910-01-630-9659
NSN 6110-01-204-0000
NSN 6685-01-090-2671
NSN 4140-01-064-5528
NSN 5975-01-458-9075
NSN 6105-00-609-4160
NSN 5998-00-144-8211
NSN 6110-01-445-0460
NSN 5920-00-150-1148
NSN 5835-01-043-1576