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 5920-01-022-8106
NSN 6220-01-616-4492
NSN 6105-01-103-7628
NSN 2925-00-907-2709
NSN 5930-00-865-7878
NSN 5945-01-258-2231
NSN 5998-01-468-8381
NSN 5920-00-959-9548
NSN 6135-00-334-4500
NSN 6685-00-415-0899
NSN 6135-01-062-9356
NSN 5990-01-023-3307