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 5990-01-411-4596
NSN 5985-01-284-2542
NSN 6110-01-558-3664
NSN 5905-00-321-8431
NSN 5935-01-113-8315
NSN 5996-01-369-9209
NSN 2925-01-567-8027
NSN 6220-00-707-5044
NSN 5945-01-326-7753
NSN 5996-01-534-1325
NSN 5999-01-495-5685
NSN 6240-00-204-9355