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 5998-00-305-4087
NSN 5905-01-415-3734
NSN 2925-01-560-4123
NSN 6220-01-025-6140
NSN 6645-01-500-0827
NSN 5920-00-263-2192
NSN 6645-01-566-3205
NSN 5965-01-131-0854
NSN 5965-01-481-4164
NSN 4140-01-519-1870
NSN 5960-00-469-1126
NSN 5920-01-519-5550