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 4140-00-281-4493
NSN 6135-00-087-0333
NSN 5835-01-123-8305
NSN 6650-00-157-1593
NSN 5910-00-225-8133
NSN 6105-00-149-7259
NSN 6320-01-358-8069
NSN 5975-01-246-8153
NSN 6130-01-530-3251
NSN 5945-00-245-1974
NSN 6685-01-009-8690
NSN 4140-01-008-4354