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 5990-01-414-2778
NSN 5975-00-393-2097
NSN 5998-01-302-8616
NSN 6220-01-378-7467
NSN 6220-01-096-1049
NSN 5975-01-313-6549
NSN 6645-01-332-8982
NSN 5996-00-411-4309
NSN 5999-00-176-7864
NSN 5965-01-063-7894
NSN 5985-00-754-5426
NSN 5996-01-287-8311