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 5905-01-139-5053
NSN 6130-01-025-9783
NSN 5905-00-137-9048
NSN 5935-00-852-4612
NSN 2925-00-535-0372
NSN 6220-00-304-2972
NSN 5998-00-048-1570
NSN 4140-01-566-5530
NSN 6130-01-446-0729
NSN 6685-01-268-1724
NSN 6130-00-100-0175
NSN 5985-00-542-0597