A telescope whose line of vision is 180 degrees from the eye.
Classification: Military equipments not identified by kind
NSN 6150-00-222-7940
NSN 6620-01-528-6076
NSN 5945-01-525-8251
NSN 6645-01-203-8771
NSN 5835-01-290-4397
NSN 6130-00-727-6912
NSN 6320-01-380-7372
NSN 5950-00-814-3356
NSN 6610-01-257-5808
NSN 5975-01-530-1914
NSN 5930-00-177-6926
NSN 4140-00-555-3856