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 6240-01-650-5348
NSN 6320-01-312-3620
NSN 7035-01-088-6415
NSN 2925-01-301-9339
NSN 6620-00-438-5833
NSN 5910-00-510-6612
NSN 5998-01-158-3006
NSN 6240-01-354-2320
NSN 6645-01-367-2581
NSN 5910-00-549-4895
NSN 6685-00-575-4647
NSN 5930-01-141-6967