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 6645-01-534-3148
NSN 4140-01-025-9699
NSN 5895-00-927-9909
NSN 5935-00-318-2805
NSN 6320-01-527-0211
NSN 6150-00-576-3964
NSN 6110-01-327-3670
NSN 6240-01-413-0734
NSN 5945-01-326-8551
NSN 2925-01-054-3190
NSN 2925-01-327-3069
NSN 6240-00-850-1407