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 6220-01-552-6339
NSN 5985-00-242-8375
NSN 6620-00-832-2556
NSN 6240-00-068-5543
NSN 5998-01-040-7060
NSN 6135-01-413-4747
NSN 5965-00-150-1144
NSN 5990-01-167-7043
NSN 6130-01-422-1638
NSN 6150-01-341-9068
NSN 6110-01-023-2248
NSN 5990-01-564-9532