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 6645-01-389-1970
NSN 2925-00-905-2655
NSN 5835-01-416-6455
NSN 5996-00-794-4833
NSN 5975-01-096-6270
NSN 6220-00-373-3679
NSN 4140-01-306-9138
NSN 6645-00-819-5045
NSN 5945-01-493-2985
NSN 6150-01-436-5181
NSN 5910-00-360-2334
NSN 5930-01-557-8057