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 6110-01-505-7315
NSN 6240-01-582-3790
NSN 5835-01-488-6678
NSN 5935-00-394-3726
NSN 5855-01-452-1406
NSN 6110-01-029-3403
NSN 6610-00-512-4183
NSN 5835-01-136-3394
NSN 5998-01-254-7703
NSN 6150-00-773-5147
NSN 6645-01-554-5881
NSN 6130-01-621-2627