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 6320-01-330-4634
NSN 5855-01-356-2759
NSN 6105-00-594-3530
NSN 5920-00-908-1929
NSN 6110-00-188-9874
NSN 6135-00-686-4777
NSN 2925-01-472-4423
NSN 5999-01-458-1858
NSN 5925-00-857-4850
NSN 7035-01-095-9322
NSN 6645-00-189-7075
NSN 6145-00-688-5697