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 2925-01-327-3069
NSN 6110-00-870-5808
NSN 6240-01-087-4749
NSN 5835-00-092-1136
NSN 5910-00-127-6206
NSN 6620-00-343-8229
NSN 5835-01-241-1090
NSN 6135-00-112-8637
NSN 5855-01-587-0783
NSN 4140-01-447-1507
NSN 6685-00-148-9729
NSN 6130-01-157-8094