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 6610-01-023-1918
NSN 6645-01-534-5545
NSN 6240-00-446-7796
NSN 5910-01-428-4361
NSN 5855-01-481-6280
NSN 5835-01-229-6964
NSN 6220-01-063-4665
NSN 5925-01-042-8668
NSN 5990-01-434-3469
NSN 5985-00-411-3446
NSN 5945-00-528-7454
NSN 5999-01-462-2644