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 6150-01-352-5613
NSN 6150-01-333-1827
NSN 5920-01-150-3328
NSN 5835-01-126-9358
NSN 5996-01-335-0584
NSN 5975-01-352-7169
NSN 7035-00-500-7839
NSN 5920-00-478-1280
NSN 5975-00-957-8748
NSN 6240-00-017-9006
NSN 5990-00-403-9768
NSN 5998-01-482-8426