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 6130-00-015-7929
NSN 6620-01-530-3198
NSN 6685-01-294-0714
NSN 7035-01-227-7492
NSN 6135-00-488-4478
NSN 5855-01-346-2881
NSN 5985-01-153-0781
NSN 2925-01-121-3355
NSN 6685-01-533-5783
NSN 4140-01-107-0576
NSN 5950-01-613-1873
NSN 6105-01-529-5705