Dark neutral filter
An item having two plane-parallel surfaces and used in the telescopic system of an optical instrument to modify the density or spectral intensity of light by absorption. Several filters having varied characteristics are usually mounted in such a manner that any selected filter may be moved in or out of the optical axis as light conditions warrant. Excludes window, optical instrument.
Classification: Military equipments not identified by kind
NSN 6130-01-207-1879
NSN 4140-01-363-9422
NSN 6650-01-246-4262
NSN 5835-00-841-2650
NSN 6135-01-027-7543
NSN 5996-01-519-3843
NSN 5920-01-016-8832
NSN 5996-00-057-2849
NSN 5990-00-351-5479
NSN 5990-01-357-6175
NSN 5855-01-234-5346
NSN 6620-01-475-8696