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 5998-00-661-0380
NSN 5920-00-991-2262
NSN 7035-01-441-8363
NSN 4140-01-400-3610
NSN 6145-00-944-8304
NSN 6105-01-475-2195
NSN 6105-01-184-7484
NSN 5965-00-578-1438
NSN 5855-01-456-4878
NSN 6145-01-479-5377
NSN 5996-01-123-5768
NSN 6650-01-386-5787