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 5835-01-568-7796
NSN 6105-00-087-0402
NSN 5990-01-503-0194
NSN 5920-01-249-4544
NSN 5925-01-503-7854
NSN 6645-01-370-4259
NSN 6685-01-201-8077
NSN 5975-00-665-3644
NSN 5975-01-369-2294
NSN 5965-00-803-6089
NSN 5960-01-270-6362
NSN 5915-01-613-1294