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 6685-01-492-7337
NSN 5835-01-367-4330
NSN 5999-01-441-3101
NSN 5945-01-299-7150
NSN 5990-00-177-2924
NSN 5999-01-574-6392
NSN 4140-01-302-2638
NSN 5998-01-129-9757
NSN 5935-01-144-3852
NSN 5835-01-412-0344
NSN 5950-00-043-2587
NSN 6145-01-300-6014