A telescope whose line of vision is 180 degrees from the eye.
Classification: Military equipments not identified by kind
NSN 6620-00-553-8854
NSN 5999-01-450-4705
NSN 6685-01-254-0485
NSN 6650-00-766-7435
NSN 6240-01-501-8865
NSN 5895-01-539-2193
NSN 6220-01-291-0448
NSN 2925-01-187-0423
NSN 5965-01-451-7313
NSN 6240-01-442-7746
NSN 5996-01-397-2142
NSN 5999-00-897-9856