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 6645-01-633-1852
NSN 5960-01-347-6791
NSN 4140-00-053-9499
NSN 6105-01-125-6498
NSN 7035-01-620-2428
NSN 6135-01-153-8027
NSN 4140-01-005-5364
NSN 6645-01-025-1002
NSN 6220-01-500-4516
NSN 6145-01-194-3086
NSN 5905-00-501-8017
NSN 5855-01-294-2804