A telescope whose line of vision is 180 degrees from the eye.
Classification: Military equipments not identified by kind
NSN 5925-01-406-4093
NSN 5925-01-013-9650
NSN 6150-00-922-5553
NSN 6320-01-422-0765
NSN 6610-01-003-9058
NSN 6105-01-658-5095
NSN 5945-01-628-7124
NSN 6105-01-543-2083
NSN 6685-00-248-7716
NSN 5950-01-534-9833
NSN 6220-00-386-0997
NSN 6645-01-592-2557