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 5925-01-393-0485
NSN 6645-01-519-3007
NSN 5999-01-179-8662
NSN 6105-00-483-1370
NSN 5999-01-238-5006
NSN 2925-01-281-6403
NSN 5985-00-106-8263
NSN 4140-01-252-9502
NSN 6650-01-045-5494
NSN 5935-00-730-3147
NSN 5965-00-360-9534
NSN 6135-01-648-0057