A telescope whose line of vision is 180 degrees from the eye.
Classification: Military equipments not identified by kind
NSN 5960-01-502-6270
NSN 5935-01-111-9225
NSN 4140-01-613-0283
NSN 6610-01-092-7554
NSN 5855-01-323-5394
NSN 6685-01-392-6138
NSN 6620-01-069-8594
NSN 5990-00-932-3070
NSN 5998-01-583-9254
NSN 5930-01-099-1032
NSN 6320-00-857-4073
NSN 5998-00-757-2738