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 5998-01-641-1547
NSN 5950-01-627-8286
NSN 6150-00-153-3196
NSN 6650-00-913-1854
NSN 6650-01-290-4001
NSN 2925-00-118-4887
NSN 5925-00-852-7385
NSN 6645-00-596-5388
NSN 6320-00-593-0379
NSN 5999-01-127-6936
NSN 6130-01-107-7839
NSN 6145-01-544-5469