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 5835-01-213-0833
NSN 2925-00-001-4604
NSN 5855-01-432-2487
NSN 6610-00-398-9673
NSN 6150-00-834-0537
NSN 6320-01-366-5157
NSN 5895-01-259-3355
NSN 6130-01-560-2618
NSN 5910-00-533-4890
NSN 6320-01-523-4954
NSN 6220-01-088-6604
NSN 5960-01-604-1158