Glass must be of optical grade
An item consisting of a light filter specifically designed for use with an oscilloscope, indicator or other item having a cathode ray tube. May include mounting facilities such as a ring and/or other hardware, but must consist of only one filter. For items having graduations or scales, see scale, cathode ray tube. See also filter assembly, light, cathode ray tube.
Classification: Military equipments not identified by kind
NSN 5910-01-392-6757
NSN 6685-01-227-0389
NSN 5910-01-342-4490
NSN 6135-01-097-9317
NSN 5999-00-607-9704
NSN 5935-00-905-5632
NSN 5930-00-205-9801
NSN 5996-01-007-8093
NSN 5965-00-622-3328
NSN 5999-00-209-9277
NSN 6650-01-596-6842
NSN 5915-01-358-6474