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 6240-00-635-9953
NSN 6130-00-250-5942
NSN 4140-01-106-4456
NSN 5999-01-510-2747
NSN 5905-00-905-7634
NSN 5965-01-288-4736
NSN 5965-00-342-5126
NSN 5965-00-156-8562
NSN 7035-01-510-2777
NSN 7035-01-132-7209
NSN 5925-00-833-2703
NSN 2925-00-238-1668