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 5935-00-284-3984
NSN 5965-01-113-7400
NSN 5998-01-004-1633
NSN 6220-01-424-6446
NSN 6320-01-454-1965
NSN 6650-01-096-6803
NSN 5910-01-625-0582
NSN 5835-01-257-0154
NSN 6130-01-512-7677
NSN 6145-01-370-4485
NSN 6105-00-541-8472
NSN 5930-01-139-6963