Magnesium fluoride coated to reducereflection
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 5835-01-250-2939
NSN 6645-01-306-9461
NSN 5975-01-317-3257
NSN 6110-00-759-8317
NSN 5915-00-915-5733
NSN 5835-01-531-0379
NSN 5996-01-519-3843
NSN 6130-01-087-0514
NSN 5975-01-561-9974
NSN 6110-01-354-1322
NSN 5920-01-432-3062
NSN 6645-01-193-5214