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 6685-00-258-2257
NSN 6620-01-494-6055
NSN 5999-00-329-6971
NSN 5835-01-329-4814
NSN 6145-01-103-4863
NSN 5835-00-816-0394
NSN 5905-00-359-3349
NSN 5945-01-606-1631
NSN 5965-01-658-4497
NSN 2925-00-774-8247
NSN 6150-00-931-5481
NSN 5960-01-553-4557