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 5905-01-606-9978
NSN 6240-01-432-5773
NSN 5975-00-864-3759
NSN 2925-01-193-6689
NSN 5965-01-164-7982
NSN 5905-01-437-9110
NSN 5945-01-423-3889
NSN 2925-01-614-0087
NSN 5975-01-207-0435
NSN 5998-01-438-9886
NSN 5855-00-610-4052
NSN 5920-00-300-1843