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 6110-01-025-0507
NSN 6110-01-275-4320
NSN 6135-00-179-0538
NSN 5996-00-661-1151
NSN 5895-00-244-2744
NSN 5998-01-356-5641
NSN 5855-01-218-3735
NSN 5920-01-415-2178
NSN 5985-01-489-7056
NSN 5945-01-320-7792
NSN 6610-01-477-4787
NSN 5990-01-537-4815