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 6650-00-411-7132
NSN 5910-00-427-1731
NSN 2925-00-980-5749
NSN 6220-00-247-4859
NSN 5950-01-304-5931
NSN 6645-01-086-7668
NSN 6645-00-813-3084
NSN 5965-00-448-9923
NSN 6645-00-033-8714
NSN 5985-01-399-7103
NSN 5920-00-149-0013
NSN 5996-00-155-6904