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 6130-00-233-6197
NSN 5998-01-302-9193
NSN 5960-01-617-6345
NSN 6220-00-946-8737
NSN 5975-00-450-7227
NSN 6685-00-964-7774
NSN 5925-01-634-0664
NSN 5950-00-133-3510
NSN 6110-01-142-3853
NSN 5930-01-386-3068
NSN 5996-00-899-8698
NSN 5895-01-504-7602