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 6220-01-429-8534
NSN 6145-00-590-8642
NSN 5996-00-300-4499
NSN 6620-01-067-8336
NSN 6685-01-245-0388
NSN 2925-01-298-2674
NSN 4140-00-492-2468
NSN 6150-00-869-8785
NSN 5975-01-322-6464
NSN 5975-01-107-5884
NSN 5945-01-123-4908
NSN 5910-00-555-3003