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 5990-01-278-9985
NSN 5998-01-285-7551
NSN 5915-00-167-4877
NSN 5915-01-588-0419
NSN 6240-01-379-5779
NSN 5990-01-483-7313
NSN 6620-01-397-8683
NSN 5925-00-816-9929
NSN 6650-00-364-7866
NSN 5996-01-493-7962
NSN 6685-00-030-8651
NSN 4140-00-053-9499