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 6620-01-498-4780
NSN 4140-01-012-3996
NSN 5996-01-064-3174
NSN 5965-00-322-9933
NSN 5996-01-300-7612
NSN 5945-00-882-1317
NSN 5998-00-005-2102
NSN 5835-00-327-6192
NSN 5985-00-723-6740
NSN 5985-01-476-7388
NSN 5985-00-665-4910
NSN 5905-01-559-4876