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 6645-01-160-7707
NSN 6220-01-361-7560
NSN 5985-01-633-9751
NSN 5855-01-634-0259
NSN 6645-00-527-6531
NSN 6220-01-369-1646
NSN 5915-00-847-7890
NSN 5930-01-364-8044
NSN 5998-00-237-0312
NSN 5925-01-520-9642
NSN 5855-00-797-8217
NSN 5905-00-404-9173