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 5999-00-883-1908
NSN 5990-00-350-2352
NSN 6240-00-522-3998
NSN 5998-01-406-7553
NSN 6610-01-452-5180
NSN 5925-01-146-9641
NSN 5935-00-304-2540
NSN 6150-01-025-1467
NSN 5965-00-937-1851
NSN 5930-01-247-8412
NSN 5920-01-328-9791
NSN 5905-00-880-8473