Heat treated
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 5855-00-797-8217
NSN 6145-01-298-6303
NSN 5910-00-104-5953
NSN 5965-01-519-1929
NSN 5999-01-012-4884
NSN 6145-00-730-3933
NSN 5905-00-573-7778
NSN 6685-00-868-9080
NSN 5965-01-606-1784
NSN 6110-00-071-0559
NSN 5905-00-233-7333
NSN 7035-00-001-4586