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 5960-01-503-0362
NSN 6135-01-458-7476
NSN 6220-01-488-9416
NSN 4140-01-166-0028
NSN 5895-00-248-2392
NSN 6145-00-520-1714
NSN 6135-01-413-4747
NSN 5998-01-310-6199
NSN 5930-00-862-5582
NSN 5855-01-266-1645
NSN 6610-00-118-9694
NSN 5855-01-515-7005