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 5985-01-176-2066
NSN 6130-00-356-1702
NSN 7035-01-484-5416
NSN 6145-01-444-1668
NSN 5975-01-123-9111
NSN 6220-01-251-7642
NSN 5990-01-443-2931
NSN 5999-01-173-3179
NSN 5945-01-142-2002
NSN 7035-01-587-3522
NSN 5960-01-040-7114
NSN 5965-01-164-0561