A telescope whose line of vision is 180 degrees from the eye.
Classification: Military equipments not identified by kind
NSN 5895-01-174-5292
NSN 6105-00-166-6845
NSN 6105-00-001-8051
NSN 6145-01-209-9562
NSN 7035-00-437-7950
NSN 5960-00-829-0063
NSN 5960-01-142-1995
NSN 5920-01-100-3018
NSN 5910-01-124-4280
NSN 4140-01-270-9624
NSN 6320-01-449-1014
NSN 5905-01-234-4465