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 6135-01-524-7621
NSN 5985-01-202-0281
NSN 5910-00-410-4221
NSN 5998-01-067-2361
NSN 4140-01-049-7512
NSN 5996-01-454-6938
NSN 5920-00-665-3973
NSN 5920-00-351-8428
NSN 5965-01-258-5662
NSN 6320-01-286-9068
NSN 5999-01-444-5242
NSN 5996-01-458-9644