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 2925-01-443-4216
NSN 5999-01-347-5028
NSN 6110-01-139-3528
NSN 5905-01-582-8708
NSN 5915-00-239-0147
NSN 5960-00-533-1125
NSN 6650-01-449-0702
NSN 5895-01-486-6829
NSN 6645-01-187-6997
NSN 6135-00-519-1325
NSN 6145-01-353-8736
NSN 5910-00-945-7959