A telescope whose line of vision is 180 degrees from the eye.
Classification: Military equipments not identified by kind
NSN 5905-01-534-3754
NSN 6685-01-377-0519
NSN 6610-00-136-2662
NSN 6320-01-225-9963
NSN 5895-00-644-5712
NSN 6320-01-445-8192
NSN 6220-01-363-8880
NSN 5835-01-647-6426
NSN 5965-00-006-8004
NSN 5835-00-543-1325
NSN 5925-01-422-3664
NSN 5975-01-463-8705