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 6150-01-158-6152
NSN 5910-00-724-1108
NSN 5975-00-881-8252
NSN 6645-01-493-2620
NSN 6105-01-368-2481
NSN 5935-01-425-2037
NSN 2925-01-283-3576
NSN 6685-00-033-7933
NSN 2925-01-295-2017
NSN 6105-01-356-2245
NSN 6145-00-891-6779
NSN 5915-01-485-0850