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 6650-00-726-4242
NSN 5895-01-029-1775
NSN 5910-01-381-2767
NSN 6650-00-336-0753
NSN 2925-00-265-7539
NSN 5895-00-288-5878
NSN 6650-00-773-2030
NSN 6150-00-753-3950
NSN 6645-01-477-4094
NSN 5945-01-520-6297
NSN 6220-01-270-7766
NSN 7035-01-145-9164