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 5925-00-901-4931
NSN 5925-00-928-8261
NSN 5855-01-408-3154
NSN 6650-00-510-3786
NSN 5960-00-132-5964
NSN 6220-01-512-2028
NSN 5950-01-046-0387
NSN 5935-01-415-4468
NSN 5960-00-147-7475
NSN 5960-01-144-9183
NSN 6620-01-290-2973
NSN 6645-00-780-5260