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 6110-01-431-6906
NSN 6150-00-767-7942
NSN 6135-00-973-5632
NSN 6320-01-176-8367
NSN 2925-00-422-5159
NSN 5960-00-933-0262
NSN 6135-00-050-7189
NSN 6610-00-614-7943
NSN 5965-01-147-5655
NSN 6105-00-647-3955
NSN 5945-00-475-1478
NSN 2925-00-524-4688