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 2925-01-419-3805
NSN 5925-01-257-4314
NSN 6240-01-401-5340
NSN 6105-01-334-0698
NSN 6150-01-634-0575
NSN 2925-00-017-9807
NSN 5960-00-792-2603
NSN 6685-00-601-1466
NSN 4140-00-841-1270
NSN 5965-01-520-8604
NSN 6145-01-549-3370
NSN 6650-01-289-3901