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 6685-01-609-1284
NSN 6645-00-025-4771
NSN 2925-01-582-2869
NSN 6150-01-534-4403
NSN 5945-00-994-4602
NSN 6220-01-158-6556
NSN 5855-00-455-6070
NSN 7035-01-307-5366
NSN 6110-00-518-2378
NSN 5965-00-929-9415
NSN 6240-01-613-2503
NSN 6150-01-555-6584