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 5855-01-163-8152
NSN 6150-01-526-9774
NSN 5990-00-845-2864
NSN 6620-00-561-9380
NSN 6610-00-468-1958
NSN 7035-00-731-8729
NSN 5930-01-482-3906
NSN 6135-01-471-4315
NSN 5996-00-950-5829
NSN 7035-01-266-3490
NSN 5895-01-403-2793
NSN 5960-01-299-1765