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 6110-00-455-6781
NSN 6685-00-961-8293
NSN 2925-00-111-4097
NSN 6650-00-901-4914
NSN 5905-00-909-7568
NSN 5905-01-360-3958
NSN 5996-00-024-0827
NSN 5999-01-038-5630
NSN 5998-01-446-2079
NSN 6150-00-605-0337
NSN 6650-00-216-6365
NSN 4140-01-392-0495