A telescope whose line of vision is 180 degrees from the eye.
Classification: Military equipments not identified by kind
NSN 6240-01-164-9175
NSN 5920-01-441-9877
NSN 5990-01-054-4255
NSN 5950-01-114-4421
NSN 6240-01-104-5085
NSN 5999-01-467-9288
NSN 7035-01-138-3698
NSN 6150-00-117-2533
NSN 5950-01-482-0989
NSN 5855-00-237-4088
NSN 5950-00-053-9535
NSN 4140-01-522-6062