A telescope whose line of vision is 180 degrees from the eye.
Classification: Military equipments not identified by kind
NSN 6105-01-029-9494
NSN 5945-01-348-0709
NSN 6145-00-817-3615
NSN 5990-01-143-2518
NSN 5835-01-370-4292
NSN 6645-01-488-5466
NSN 5950-01-444-2902
NSN 5925-00-489-8625
NSN 5905-01-573-8840
NSN 5855-00-233-2366
NSN 6610-01-476-2617
NSN 5996-00-213-7121