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 6110-01-055-6442
NSN 6145-01-070-7176
NSN 6130-01-089-1384
NSN 6685-01-615-3548
NSN 5925-01-588-8339
NSN 6645-01-200-5289
NSN 5945-01-204-8594
NSN 6610-01-393-2388
NSN 4140-00-045-8117
NSN 5930-00-912-3474
NSN 5998-01-085-9809
NSN 6685-01-495-1007