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 5965-01-193-5221
NSN 5999-00-278-5563
NSN 6135-00-500-2082
NSN 6135-01-338-2281
NSN 6240-00-812-7671
NSN 6110-01-387-8278
NSN 6320-00-636-0922
NSN 2925-00-858-8928
NSN 5895-01-520-4200
NSN 6135-01-525-6979
NSN 5985-01-164-3564
NSN 6135-01-437-6409