A telescope whose line of vision is 180 degrees from the eye.
Classification: Military equipments not identified by kind
NSN 6220-01-202-0195
NSN 5895-00-840-3776
NSN 6130-01-648-5273
NSN 6220-01-643-5848
NSN 5945-01-566-6898
NSN 6645-01-277-0530
NSN 4140-01-643-3391
NSN 5910-00-514-2038
NSN 5910-00-156-0993
NSN 5910-01-577-8845
NSN 6645-01-351-6900
NSN 6110-01-376-1402