A telescope whose line of vision is 180 degrees from the eye.
Classification: Military equipments not identified by kind
NSN 4140-01-218-5919
NSN 5935-00-069-2526
NSN 5950-01-180-9769
NSN 5950-00-290-8090
NSN 6320-00-731-6134
NSN 5895-01-422-2071
NSN 6620-01-316-3487
NSN 6105-00-389-8675
NSN 6145-00-174-4862
NSN 6610-01-422-2376
NSN 7035-01-036-0236
NSN 5996-00-707-6228