Glass mil-f21241, type 1, color yellow, grade a
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 6685-01-406-3960
NSN 6645-01-194-6594
NSN 5935-01-144-9413
NSN 5935-01-525-4016
NSN 5935-00-947-0191
NSN 6620-01-084-5112
NSN 5925-01-640-6918
NSN 4140-01-384-0444
NSN 5855-00-361-0167
NSN 6105-01-429-0232
NSN 6150-00-328-8989
NSN 5965-00-081-9412