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 6110-00-960-7341
NSN 5895-01-390-2671
NSN 6685-01-033-8810
NSN 4140-00-189-0235
NSN 6145-01-087-9973
NSN 5985-00-685-9575
NSN 6610-01-224-7247
NSN 5996-00-942-3110
NSN 5895-01-266-0998
NSN 5895-01-412-9870
NSN 6145-01-344-8751
NSN 6240-01-442-3501