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 5975-01-324-1110
NSN 2925-00-257-2872
NSN 5895-01-364-1017
NSN 6650-01-623-5931
NSN 6645-00-240-9762
NSN 5905-01-477-7152
NSN 6645-00-204-4100
NSN 6135-01-079-7852
NSN 5960-01-399-4327
NSN 5975-01-579-3455
NSN 6135-01-461-2915
NSN 6620-00-409-4975