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 5930-01-289-3502
NSN 6220-01-253-3496
NSN 5925-01-323-5784
NSN 2925-00-010-9609
NSN 6145-01-060-3485
NSN 5975-01-549-6316
NSN 5945-01-361-3792
NSN 5990-01-501-2579
NSN 5920-01-532-8280
NSN 5930-01-261-6790
NSN 4140-01-052-5065
NSN 6645-00-739-6718