Filter used for nvis operations
A transparent or translucent item designed to enclose or be placed in front of a light source. Sections of the lens may be opaque. It may or may not include a holder. It is designed to be either a replacement unit for a specific type of light, such as light, indicator; light, navigational, marine; stop light, vehicular; and lantern, electric or that portion of a switch, (as modified) used as an actuator and having provisions for illumination. See also, window, lighting fixture; globe; electric light; and filter (2), (as modified).
Classification: Other instruments and apparatus, specially designed for telecommunications (for examle, cross-talk meters, gain measuring instruments etc)
NSN 6135-01-469-6429
NSN 6220-01-209-9972
NSN 6320-01-627-8295
NSN 5915-00-841-9182
NSN 5910-01-295-0106
NSN 6110-00-935-5351
NSN 6150-01-318-5603
NSN 5990-00-724-8812
NSN 6685-01-297-6219
NSN 4140-01-631-4447
NSN 5910-00-202-1056
NSN 6610-01-365-7796