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 5999-01-276-8970
NSN 6645-01-010-3746
NSN 6110-01-377-0508
NSN 5960-01-207-9544
NSN 5990-01-304-7597
NSN 5990-00-863-8628
NSN 5960-01-583-4737
NSN 5910-00-957-2543
NSN 5985-01-278-5874
NSN 6685-01-499-1995
NSN 5960-01-231-9119
NSN 5905-01-146-1280