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 6110-01-597-6550
NSN 6220-01-009-4190
NSN 6220-00-962-3226
NSN 6685-01-341-2161
NSN 6130-00-299-6920
NSN 5835-01-525-3220
NSN 5935-01-421-2456
NSN 5935-01-129-7469
NSN 5920-00-889-7826
NSN 5996-00-534-1894
NSN 5910-00-220-2290
NSN 6105-01-411-2288