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 6645-00-230-4396
NSN 6135-00-057-2005
NSN 6240-01-542-7239
NSN 6130-01-316-1601
NSN 6685-01-297-4367
NSN 6610-00-001-9683
NSN 5915-01-189-3182
NSN 5998-00-607-7234
NSN 6645-01-491-6965
NSN 5990-01-472-2447
NSN 6220-01-323-5408
NSN 6105-00-325-9356