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 5935-00-608-5357
NSN 6110-00-897-4594
NSN 5996-01-025-5683
NSN 5965-00-204-8513
NSN 5999-00-078-7702
NSN 5905-01-408-5274
NSN 5975-01-177-3725
NSN 6645-01-206-4888
NSN 6240-01-322-4887
NSN 5965-01-301-2553
NSN 6145-01-506-0113
NSN 5985-00-104-5981