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 5998-01-502-7244
NSN 6610-01-357-1940
NSN 4140-00-852-0627
NSN 2925-01-411-8002
NSN 5985-00-849-3786
NSN 5950-01-239-6498
NSN 5895-01-403-2793
NSN 6105-01-387-5135
NSN 6130-00-410-2819
NSN 5996-01-633-7979
NSN 5915-00-721-2204
NSN 5965-01-043-9357