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 6320-01-227-2648
NSN 2925-01-109-3684
NSN 5996-01-269-2901
NSN 5985-01-073-9691
NSN 6105-00-919-4744
NSN 6650-01-063-2834
NSN 5950-01-381-0256
NSN 4140-01-184-5648
NSN 5965-01-256-9460
NSN 5915-00-421-0780
NSN 6320-00-790-4844
NSN 6645-01-076-4655