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 6105-01-311-9120
NSN 6135-01-366-9633
NSN 6220-00-915-7250
NSN 5950-01-504-6879
NSN 6110-01-384-7081
NSN 6320-01-054-3046
NSN 6685-01-453-9951
NSN 5915-01-378-8804
NSN 6130-00-111-3085
NSN 5935-00-479-1746
NSN 6110-01-537-1159
NSN 5895-01-100-1477