A telescope whose line of vision is 180 degrees from the eye.
Classification: Military equipments not identified by kind
NSN 6110-01-347-6761
NSN 5960-00-821-8739
NSN 5920-01-377-1410
NSN 5855-00-466-2309
NSN 5960-00-140-9583
NSN 6320-01-592-6248
NSN 6320-01-446-8050
NSN 4140-01-634-0330
NSN 5910-01-582-7355
NSN 5930-01-643-5415
NSN 5998-01-200-5556
NSN 5960-01-174-3119