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 4140-01-387-9698
NSN 6145-01-317-0631
NSN 4140-01-422-4431
NSN 5835-01-442-6482
NSN 5915-01-196-5830
NSN 5920-01-165-2909
NSN 5960-01-425-1454
NSN 5985-01-435-6572
NSN 6240-01-105-1399
NSN 6105-01-056-3074
NSN 5935-01-387-2896
NSN 4140-01-606-8772