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 5996-01-619-6176
NSN 6650-01-521-2077
NSN 5945-00-538-4130
NSN 2925-00-964-7128
NSN 5925-01-213-6398
NSN 6145-01-350-4272
NSN 5945-00-270-4785
NSN 5965-00-959-4910
NSN 6150-01-528-4010
NSN 5996-00-383-6173
NSN 6150-01-323-9137
NSN 5855-00-987-1171