Dark neutral color
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 6650-00-908-4751
NSN 5945-01-605-4274
NSN 6110-01-456-8466
NSN 6610-01-411-6800
NSN 5945-00-289-3715
NSN 6610-01-519-0997
NSN 5998-00-526-9253
NSN 5915-00-238-7064
NSN 5835-01-161-7461
NSN 4140-01-556-3351
NSN 6685-01-110-1783
NSN 5945-01-551-9725