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 5905-00-407-0331
NSN 6220-00-782-2058
NSN 5985-00-170-9097
NSN 5998-00-689-1717
NSN 4140-01-555-3124
NSN 6110-01-538-0400
NSN 5998-01-554-5901
NSN 6150-01-506-6472
NSN 5930-00-857-5063
NSN 6610-00-824-3376
NSN 6145-01-235-1646
NSN 5996-01-415-1818