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 5996-01-459-8014
NSN 4140-01-514-8056
NSN 6110-01-588-5146
NSN 5930-01-488-7826
NSN 5925-00-336-1992
NSN 6145-01-353-7407
NSN 6645-01-228-9645
NSN 5915-01-465-8672
NSN 5945-00-170-5885
NSN 5905-01-117-4058
NSN 5915-01-018-8112
NSN 6645-01-192-8717