A telescope whose line of vision is 180 degrees from the eye.
Classification: Military equipments not identified by kind
NSN 5910-00-905-8584
NSN 2925-01-564-8043
NSN 2925-01-317-4543
NSN 6110-01-411-6608
NSN 5985-01-112-8057
NSN 5965-01-600-0566
NSN 5965-01-602-8072
NSN 5960-01-530-0581
NSN 5935-00-088-2705
NSN 5855-01-330-3669
NSN 5999-01-457-9805
NSN 5999-01-412-9186