Magnesium fluoride anti-reflection coating both surfaces per mil-c-675c; fragility factor: very delicate
A piece of transparent material specifically designed to be placed directly in front of a dial or scale to protect it from foreign matter. It is cut to size and may include a frame. It may have an index line or other marking. See also window, observation; and dial, scale.
Classification: Clock or watch glass; glasses for noncorrective spectagles not optically worked; hollow glass spheres and their segments for the mnfctr ofsuch glasses
NSN 5965-01-190-7391
NSN 5950-00-529-0599
NSN 4140-01-452-9428
NSN 5835-01-412-0344
NSN 5935-00-949-0547
NSN 6105-01-643-6024
NSN 5998-01-146-5075
NSN 6135-00-686-4777
NSN 6150-01-493-4181
NSN 6610-01-556-2353
NSN 7035-01-412-3692
NSN 5985-01-555-2923