Cover included 0.025 to 0.038 mm thick
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 5990-01-386-5561
NSN 5895-01-418-0850
NSN 5855-00-631-4565
NSN 5920-00-674-5882
NSN 6685-01-183-9634
NSN 6685-01-318-5042
NSN 6645-01-099-4322
NSN 6645-00-854-7505
NSN 5985-00-583-1158
NSN 5925-00-525-4037
NSN 7035-00-968-4848
NSN 5925-00-491-2363